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Mechanical, hydraulic, or pneumatic, lifting device
A jack is a mechanical lifting device. Most often, the term "jack" denotes equipment used to apply great forces or lift heavy loads. There are also smaller
Jack_(device)
Topics referred to by the same term
Look up car jack or carjack in Wiktionary, the free dictionary. Car jack or carjack may refer to: Jack (device), a mechanical lifting device used to apply
Car_jack
Topics referred to by the same term
equipment Jack (device), a device used to lift heavy objects Jackscrew, a device used to support heavy objects at various heights Pallet jack, a device with
Jack
Family of connectors typically used for analog signals
& OMTP". Headset Buddy Help. Retrieved 2020-04-24. "3.5 mm Headset Jack: Device Specification". Android Open Source Project. "Smartphone Headset Standards:
Phone_connector_(audio)
VoIP product, Telecom company
telephone service (VoIP). Originally, MagicJack required a computer to work. Users connected a small device to their computer, and with an internet connection
MagicJack
Form of birth control involving a device placed in the uterus
intrauterine device (IUD), also known as an intrauterine contraceptive device (IUCD or ICD), is a small, T-shaped birth control device that is inserted
Intrauterine_device
Topics referred to by the same term
Barrel jack may refer to: A type of heavy-duty jack (device), used for lifting vehicles or other heavy loads off the ground for maintenance and repair
Barrel_jack
American television series (2018–2023)
Tom Clancy's Jack Ryan (also known simply as Jack Ryan) is an American political action thriller television series based on characters from the fictional
Jack_Ryan_(TV_series)
USB wireless receiver
some Unifying devices were still being sold that were vulnerable to the original 2016 MouseJacking attack. Bluetooth Human interface device Logitech Harmony
Logitech_Unifying_receiver
Animal pest killer
The M44 cyanide device (also called a cyanide gun, cyanide trap, or canid pest ejector) is used to kill coyotes, feral dogs, and foxes. It is made from
M44_(cyanide_device)
Topics referred to by the same term
Look up jacking in Wiktionary, the free dictionary. Jacking may refer to: Jacking, use of a jack, a mechanical lifting device Jacking (dance), a freestyle
Jacking
American YouTuber and online streamer (born 2003)
Jack Colin Doherty (born October 8, 2003) is an American influencer, YouTuber, and online streamer best known for performing stunts and pranks. He first
Jack_Doherty_(YouTuber)
Machine allowing an individual to die quickly with minimal pain
ethics of euthanasia and the use of euthanasia devices. Invented by Jack Kevorkian, who used this device and called it a "Thanatron" or death machine (after
Euthanasia_device
Equipment and procedure in material handling
Cargo net Chain Chain hoist Come-along Crane (machine) Hook Hoist (device) Jack (device) Knot Lever Lifting bag Lifting beam Link (chain) Pry bar Rope Shackle
Rigging_(material_handling)
Flag of the United Kingdom
maritime flag use of jack was "A ship's flag of a smaller size than the ensign, used at sea as a signal, or as an identifying device". The jack was flown in the
Union_Jack
Flat structure to transport goods
stable fashion while being lifted by a forklift, a pallet jack, a front loader, a jacking device, or an erect crane. Many pallets can handle a load of 1
Pallet
Gear and pawl; prevents motion in one direction
keyboards Freewheel (overrunning clutch) Grease guns Handcuffs Jacks Anti-rollback devices used in roller coasters Looms Seatbelts Select-fire switch Slacklines
Ratchet_(device)
Device that separates the carrier's wiring from the customer's
In telecommunications, a network interface device (NID; also known by several other names) is a device that serves as the demarcation point between the
Network_interface_device
New Zealand hacker, programmer and computer security professional
medical devices. At the time of his death, Jack was Director of Embedded Device Security at IOActive. At a Black Hat conference in 2010, Jack gave a presentation
Barnaby_Jack
Device featuring a number of jacks for connecting and routing circuits
A patch panel is a device or unit featuring a number of jacks, usually of the same or similar type, for the use of connecting and routing circuits for
Patch_panel
Literary device in the form of a repeated joke or reference
A running gag, or running joke, is a literary device that takes the form of an amusing joke or a comical reference and appears repeatedly throughout a
Running_gag
Tool driven by compressed air supplied by an air compressor
wrenches Nail gun Jackhammer Pneumatic hammer Pneumatic drill Pneumatic jack (device) Pneumatic paint shaker Pneumatic riveter Sanders Sandblaster Shears
Pneumatic_tool
(2007–2025). iPhone News - Newsroom Archive. Retrieved September 19, 2025. Official Apple sites iPhone iOS Specifications Obsolete and vintage devices
List_of_iPhone_models
Technology to disable microphones
simultaneous charging and protection against juice jacking). In addition to blockers that can be plugged into devices, there are also tray-style active blockers
Microphone_blocker
Mobile security risk
Juice jacking is a theoretical type of compromise of devices like smartphones and tablets which use the same cable for charging and data transfer, typically
Juice_jacking
American businessman, entertainment and manager
Jack Leon Gordon (November 10, 1939 – April 19, 2005), who also went by the names Samuel Isaac Gordon and Clifford William Johnson, was an American businessman
Jack Gordon (entertainment manager)
Jack_Gordon_(entertainment_manager)
Smartphones released by Apple in 2016
back camera, and the controversial removal of the 3.5 mm headphone jack. The device's internal hardware received upgrades, including a heterogeneous quad-core
IPhone_7
1986 spy comedy film directed by Penny Marshall
accesses the consulate computer to secure an exit route for Jack but Talbot disables the device before she finishes. Terry visits Liz's home for advice but
Jumpin'_Jack_Flash_(film)
American pathologist and euthanasia activist (1928–2011)
deaths were assisted by means of a device which delivered the euthanizing drugs intravenously. Kevorkian called the device a "Thanatron" ("Death machine"
Jack_Kevorkian
Bitcoin cryptocurrency hardware wallet product
mobile app, a hardware device, and a set of recovery tools in case the customer loses the phone, their hardware or both. Jack Dorsey announced in June
Bitkey
American YouTube personality, comedian, actor, and producer
Pierces Cable With HLN’s ‘Jack Vale: Offline’". Deadline, January 2015 Official "Pooter" website for his flatulence device "Jack Vale". Internet Movie Database
Jack_Vale_(comedian)
British television series
I, Jack Wright is a 2025 British drama television series created by Chris Lang and starring John Simm, Nikki Amuka-Bird, Daniel Rigby and Trevor Eve. The
I,_Jack_Wright
American racing driver (1886–1950)
device, a transmission device, a clutch plate and a steering wheel invention. Wikimedia Commons has media related to Jack Tower. "Jack Tower". Jack Tower
Jack_Tower
A wax jack (wax-jack, taper-jack) is a device used to hold a taper of sealing wax intended to create sealings on documents. The wax jack was first introduced
Wax_jack
DC Comics superhero
before, but he owes them all to one device implanted in him rather than a chemical agent and two devices. When Jack Ryder first became the Creeper, he
Creeper_(DC_Comics)
Electrical connector used for analog audio and video
Connections are made by pushing the cable's plug into the female jack on the device. The signal-carrying pin protrudes from the plug, and often comes
RCA_connector
Device for removing boots
the user places the heel of the boot in the mouth of the jack, stands on the back of the device with the other foot, and pulls their foot free of the front
Boot_jack
Device used for lifting or lowering a load
A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated
Hoist_(device)
2026 film by Boots Riley
Corvette agrees to sell them, sending Sade away with the suits as she uses the device to move between China and the US, running from authorities in both settings
I_Love_Boosters
Programmable machine that processes data
robots. Computers are at the core of general-purpose devices such as personal computers and mobile devices, such as smartphones. Computers power the Internet
Computer
Operating system for mobile devices
open-source software, designed primarily for touchscreen-based mobile devices such as smartphones and tablet computers. Android has historically been
Android_(operating_system)
24-pin USB connector system
Mode, this mode allowed a device with a Type‑C port to drive analog headsets directly through an audio adapter with a 3.5 mm jack, providing three analog
USB-C
Computer programming technique
Jensen's device is a computer programming technique that exploits call by name. It was devised by Danish computer scientist Jørn Jensen, who worked with
Jensen's_device
Device for broadcasting radio signals
audio device (such as an MP3 player or a smartphone) to a standard FM radio. Most of these transmitters plug into the device's headphone jack and then
Personal_FM_transmitter
2019 Android phablet by Samsung Electronics
connectivity, the only A9x device released under the first-generation of the relaunched Galaxy A lineup, and also the third Galaxy Ax0 device (after Galaxy A60
Samsung_Galaxy_A90_5G
Elastic object that stores mechanical energy
A spring is a device consisting of an elastic but largely rigid material (typically metal) bent or molded into a form (especially a coil) that can return
Spring_(device)
Device which rotates meat roasting on a spit
roasting jacks included the steam jack, driven by steam, the smoke jack, driven by hot gas rising from the fire, and the bottle jack or clock jack, driven
Roasting_jack
"headphone splitter" or "audio jack splitter", is a device that allows two headphones to be connected through to one audio jack. They can be used to listen
Dual_headphone_adapter
Family of network music players
family of network music players. The original device was the SliMP3, introduced in 2001 by Slim Devices. It had an Ethernet interface and played MP3 music
Squeezebox (network music player)
Squeezebox_(network_music_player)
Connectors for wiring of telephone equipment
the pinout of the device, i.e. the assignment or function of each contact. Modular connectors are specified for the registered jack (RJ) series of connectors
Telephone_jack_and_plug
Fictional character from Doctor Who and Torchwood
Captain Jack Harkness is a fictional character played by John Barrowman in Doctor Who and its spin-off series, Torchwood. The character first appears in
Jack_Harkness
Mechanical lifting device operated by turning a leadscrew
A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew. It is commonly used to lift moderate and heavy weights, such as
Jackscrew
American fast-food restaurant chain
Jack in the Box, Inc. is an American fast food restaurant chain founded on February 21, 1951, by Robert O. Peterson in San Diego, California, where it
Jack_in_the_Box
Windows Phone. New devices running Windows Mobile were released between 2003 and 2010. Many different companies produced devices running Windows Mobile
List of Windows Mobile devices
List_of_Windows_Mobile_devices
American entrepreneur (born 1976)
Jack Patrick Dorsey (born November 19, 1976) is an American tech entrepreneur and businessman who co-founded Twitter, Inc., which operated social media
Jack_Dorsey
Powered mechanical device
movement to perform an action. The term is commonly applied to artificial devices, such as those employing engines or motors, but also to natural biological
Machine
Method of espionage tradecraft
suspicion. Any hidden location is used. A dead drop spike is a concealment device similar to a microcache. It has been used since the late 1960s to hide money
Dead_drop
Branch of physics and electrical engineering
studies and applies the principles of physics to design, create, and operate devices that manipulate electrons and other electrically charged particles. It
Electronics
2020 film by Chris Columbus
son Jack. Wanting to be back home where it is snowing, Kate secretly tries to fly back early to Boston. Unbeknownst to Kate and their stowaway Jack, the
The_Christmas_Chronicles_2
Vibrating and rotating phallic sex toy with a clitoral stimulator attached to the shaft
vaginal stimulation with a clitoral stimulator attached to the shaft. The device's name is derived from the fact that the clitoral stimulator looks like a
Rabbit_vibrator
Fictional device appearing in American comic books
fictional device appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artist Jack Kirby, the device first appeared
Cerebro
Action sport
skiing device with a bench seat attached to a ski. The seat may be solidly mounted with a post, or sprung mounted with a shock-absorbing device. The origins
Jack_jumping
Financial services provided by Block, Inc.
Marks New Handheld POS Device and Release Schedule". Digital Transactions. Retrieved 2025-12-30. Mason, Emily (May 27, 2025). "Jack Dorsey's Block Plans
Square_(financial_services)
Topics referred to by the same term
terminator, separator or filler. This symbol has no visual representation. Null device, a virtual file that discards data written to it, on Unix systems /dev/null
Null
Audio remix and streaming device
The Stem Player is an audio remix device and music streaming platform developed by British technology company Kano Computing in collaboration with American
Stem_Player
Boundary of a private and public network
soon as possible upon entering the customer premises. A network interface device often serves as the demarcation point. Prior to Federal Communications Commission
Demarcation_point
American author (born 1975)
George Petersen (born 3 July 1975), better known by his pen name Jack Carr, is an American novelist, screenwriter, producer, podcaster, and former Navy
Jack_Carr_(writer)
Messaging and VoIP service owned by Meta
WhatsApp for linked devices to work, but now WhatsApp can run on linked devices without such requirement. This ability (named multi-device support) began testing
E-reader devices
The first Amazon Kindle e-reader device was introduced in November 2007. As of 2025, twelve generations of Kindle devices have been released, with the latest
Amazon_Kindle_devices
Software framework for audio
sound devices in a system. ALSA is released under GPL-2.0-or-later and LGPL-2.1-or-later. On Linux, sound servers, like sndio, PulseAudio, JACK (low-latency
Advanced Linux Sound Architecture
Advanced_Linux_Sound_Architecture
Physical components of a computer
storage, graphics card, sound card, and computer case. It includes external devices such as a monitor, mouse, keyboard, and speakers. By contrast, software
Computer_hardware
Video game series
The series began with You Don't Know Jack (1995), and combines trivia and comedy within a game show framing device. While it is primarily a PC and Mac-based
You Don't Know Jack (franchise)
You_Don't_Know_Jack_(franchise)
Comic book superhero in the DC Comics
receiving Jack's mental commands from a distance (this is a feature of the device, an ability to "attune itself to the user", and not a power of Jack's). At
Starman_(Jack_Knight)
Cell phone model
2008-01-27. PhoneDB. "Samsung SGH-i607 BlackJack - Device Specs - PhoneDB". phonedb.net. "Samsung SGH-i607 BlackJack reviews and technical details - Softpedia"
Samsung_BlackJack
2025 smartphone built from BlackBerry Classic hardware
than the original and is charged via a USB‑C port; the device also features a headphone jack, single nano‑SIM slot, NFC support, Bluetooth, Wi‑Fi and
Zinwa_Q25
2005 animated film
a device that erases her memory of the events to protect the family's superhero identity. Bret Parker as Kari McKeen, the babysitter for Jack-Jack. Eli
Jack-Jack_Attack
Australian network interface device
connection of in-premises devices. They typically have multiple RJ45 jacks for the UNI-D (data) connection, and some models have RJ11 jacks for the UNI-V (voice)
Network Termination Device (NBN)
Network_Termination_Device_(NBN)
2010 film
decades ago, Jack Kevorkian builds his first "Mercitron" from parts bought at a flea market. He meets with Rivlin and presents his device. Kevorkian explains
You_Don't_Know_Jack_(film)
Device for tracking stolen vehicles
such as the radio, headlight switch, or other switched device. The core of the legacy LoJack system is a small, silent radio transceiver that is discreetly
LoJack
American author, journalist and social activist (1876–1916)
London (né Chaney; January 12, 1876 – November 22, 1916), better known as Jack London, was an American novelist, journalist and activist. A pioneer of commercial
Jack_London
Portal device within the Stargate fictional universe
A Stargate is a fictional Einstein–Rosen bridge portal device within the Stargate fictional universe that allows practical, point-to-point near instantaneous
Stargate_(device)
Licensing program for peripherals for iPod, iPad and iPhone
ultimately became MFi. The MFi program covers various device connectors including the headphone jack, original dock connector and the newer Lightning connector
MFi_Program
Analog low-pass filter on communications networks
it to every jack in the home where an analog device will be in use, and dedicating the other (unfiltered) leg to the DSL modem. Some devices such as monitored
DSL_filter
American entrepreneur and investor (born 1985)
companies including Humane, which was developing a wearable AI-powered device; Retro Biosciences, a research company aiming to extend human life by 10
Sam_Altman
US Army officer, CIA station chief
awards are the Silver Star, Soldier's Medal, Bronze Star Medal with "V" Device, two Purple Hearts, the Meritorious Service Medal, the Combat Infantryman's
William_Francis_Buckley
Security-focused, Android-based mobile operating system
using the Auditor app, either with the help of a second device or by using remote attestation. Jack Wallen of ZDNET described the installation process as
GrapheneOS
2002 film by Phil Alden Robinson
the same name. The film, which is set in the Jack Ryan franchise, is a reboot taking place in 2002. Jack Ryan is portrayed as a younger character by Ben
The_Sum_of_All_Fears_(film)
Set of networking protocols
that permits networked devices, such as personal computers, printers, Internet gateways, Wi-Fi access points and mobile devices, to seamlessly discover
Universal_Plug_and_Play
Dolphin famous for meeting and escorting ships
his printer's device was a dolphin, referencing 16th century Venetian printer Aldus Manutius, and he named the press after Pelorus Jack. "It was a happy
Pelorus_Jack
PDA product line by Casio
pad. Extras: Speaker and Stereo 3.5 mm headphone jack Casio always advertised the fact that their devices could be updated. Casio decided it would not issue
Casio_Cassiopeia
Communication connector using the USB protocol
applies to USB-C. To accomplish this, a locking device was added and a leaf spring was moved from the jack to the plug, so that the most-stressed part is
USB_hardware
Topics referred to by the same term
work underneath Car ramp, a device which raises a car from the ground for access to its undercarriage Autorack Car jack This disambiguation page lists
Car_lift
1847 novel by Emily Brontë
another character. The use of a character like Nelly Dean is a literary device, a well-known convention taken from the Gothic novel, the function of which
Wuthering_Heights
American semiconductor manufacturer
Analog Devices, Inc. (ADI), also known simply as Analog, is an American multinational semiconductor company specializing in data conversion, signal processing
Analog_Devices
American multinational technology company
returned to profitability by introducing the iMac, iPod, iPhone, and iPad devices; creating the iTunes Store; launching the "Think different" advertising
Apple_Inc.
American business executive and founder of SanDisk
business executive best known for being the co-founder of SanDisk along with Jack Yuan and Sanjay Mehrotra. Harari was born in 1945 in Tel Aviv, Israel. His
Eli_Harari
American computer scientist (born 1954)
found their way into consumer products, such as hand-held devices (e.g., mobile GPS devices, smartphones, etc.) whose map displays automatically orient
Neil_Siegel
Audio signal access point built into a mixing console
return jack interrupts the signal, but the send jack doesn't. The send jack can always be counted on to send a signal out to an external device. A refinement
Insert_(effects_processing)
Novel by Peter Carey
Jack Maggs (1997) is a novel by Australian novelist Peter Carey. Set in 19th century London, Jack Maggs is a reworking of the Charles Dickens novel Great
Jack_Maggs
Topics referred to by the same term
or AUX jack, typically used for analog audio signals Aux/IAA repressors, related to auxin plant hormones AUX: (for auxiliary), a DOS text device AUX (CONFIG
Aux
JACK DEVICE
JACK DEVICE
Surname or Lastname
English (Kentish)
English (Kentish) : from a medieval personal name, Pack, possibly a survival of the Old English personal name Pacca, although this is found only as a place name element and appears to have died out fairly early on in the Old English period. The Middle English personal name is more likely to be a derivative of the Latin Christian name Paschalis (see Pascal).Jewish (Ashkenazic) : metonymic occupational name for a wholesale trader, from German Pack ‘package’ (see Packer).Anglicized form of Dutch Pak.
Female
Native American
Native American Tupi name JACI means "moon."
Boy/Male
American, Australian, British, English, French, German, Hebrew, Scottish, Swedish, Swiss
Son of Jack; He who Supplants; God has been Gracious; Has Shown Favor; Based on John or Jacques; God is Gracious
Surname or Lastname
English
English : from an Old English personal name, Dæcca.Dutch : metonymic occupational name for a roofer, from dack, a variant of deck ‘roof’. Compare De decker.
Surname or Lastname
Scottish and English
Scottish and English : from a Middle English personal name, Jakke, from Old French Jacques, the usual French form of Latin Jacobus, which is the source of both Jacob and James. As a family name in Britain, this is almost exclusively Scottish.English and Welsh : from the same personal name as 1, taken as a pet form of John.German (also Jäck) : from a short form of the personal name Jacob.Americanized form of one or more like-sounding Jewish surnames.
Male
English
Short form of English Zackary, ZACK means "whom Jehovah remembered."Â
Boy/Male
Shakespearean American Hebrew Polish English
Henry VI, Part 2' Jack Cade, a rebel.
Surname or Lastname
English, German, and Jewish (Ashkenazic)
English, German, and Jewish (Ashkenazic) : metonymic occupational name for a maker of sacks or bags, from Old English sacc, Middle High German sack, German Sack ‘sack’. Bahlow also suggests someone who carried sacks.German : topographic from Middle High German sack ‘sack’, ‘end of a valley or area of cultivation’.Dutch : from a reduced form of the personal name Zacharias.Jewish (eastern Ashkenazic) : from an acronym of the Hebrew phrase Zera Keshodim ‘Seed of the Holy’ (referring to martyred ancestors), or from a short form of the personal name Isaac.
Surname or Lastname
English (Cornwall and Wales)
English (Cornwall and Wales) : variant of Jack.Czech (JaÄka), Polish, and German (of Slavic origin) : from a pet form (Czech JaÄ, Polish Jacz) of any of the various Slavic personal names beginning with Ja-, for example Jakub, Jan, Jacenty (see Jacek).
Male
English
Scottish form of English Jack, JOCK means "God is gracious."
Surname or Lastname
English and North German
English and North German : patronymic from Jack.
Male
English
Probably originally an Anglicized form of French Jacques, JACK means "supplanter," it is now considered a pet form of English John, meaning "God is gracious."
Boy/Male
American, Anglo, Australian, British, Celebrity, Chinese, Christian, Danish, Dutch, English, French, German, Hebrew, Indian, Jamaican, Latin, Polish, Swedish, Swiss, Tamil
God is Gracious; Son of Jack; He who Supplants; Diminutive of Jack; Supplanter
Male
Finnish
Short form of Finnish Jaako, JAAK means "supplanter."
Girl/Female
Australian, Netherlands, Portuguese
Variant of Jack
Female
English
Pet form of English Jackalyn, JACKI means "supplanter."
Boy/Male
Christian & English(British/American/Australian)
Godly
Surname or Lastname
English
English : from Middle English bakke ‘back’ (Old English bæc), hence a nickname for someone with a hunched back or some other noticeable peculiarity of the back or spine, or a topographic name for someone who lived on a hill or ridge, or at the rear of a settlement.English : from the Old English personal name Bacca, which was still in use in the 12th century. It is of uncertain origin, but may have been a byname in the same sense as 1.English : nickname from Middle English bakke ‘bat’ (apparently of Scandinavian origin), from some fancied resemblance to the animal.Altered spelling of Bach 1, 2, or 6.North German : from Middle Low German back ‘kneading trough’, hence a metonymic occupational name for someone who made or used such vessels.Americanized spelling of Norwegian Bakk(e) (see Bakke).
Male
Polish
Modern form of Polish Jacenty, JACEK means "hyacinth flower."
Male
English
Originally a short form of surnames, mostly Scottish, beginning with Mac-, MACK means "son of," it is now sometimes given as a forename.Â
JACK DEVICE
JACK DEVICE
Boy/Male
Hindu, Indian, Punjabi, Sikh
God's Warrior
Girl/Female
Hindu, Indian
Peace; Name of a God
Girl/Female
Indian, Telugu
Remind of God
Girl/Female
Tamil
Haimavati | ஹைமவதீ
Parvati, Lord Shivas wife
Girl/Female
Hindu, Indian, Marathi, Sanskrit
Of Thought; Wish; Longing
Boy/Male
Arabic
Ready
Boy/Male
Muslim/Islamic
Attribute of Allah
Boy/Male
Hindu, Indian, Traditional
Lakshmi's Son; Wealthy Person
Girl/Female
Muslim
Glorious, Noble, Respected
Girl/Female
English
and Kayla, meaning: keeper of the keys; pure.
JACK DEVICE
JACK DEVICE
JACK DEVICE
JACK DEVICE
JACK DEVICE
v. t.
To move or lift, as a house, by means of a jack or jacks. See 2d Jack, n., 5.
n.
A portable machine variously constructed, for exerting great pressure, or lifting or moving a heavy body through a small distance. It consists of a lever, screw, rack and pinion, hydraulic press, or any simple combination of mechanical powers, working in a compact pedestal or support and operated by a lever, crank, capstan bar, etc. The name is often given to a jackscrew, which is a kind of jack.
n.
To make a pack of; to arrange closely and securely in a pack; hence, to place and arrange compactly as in a pack; to press into close order or narrow compass; as to pack goods in a box; to pack fish.
v. i.
To write upon the back of; as, to back a letter; to indorse; as, to back a note or legal document.
v. i.
To make a back for; to furnish with a back; as, to back books.
n.
A hood or other device placed over a chimney or vent pipe, to prevent a back draught.
n.
A popular colloquial name for a sailor; -- called also Jack tar, and Jack afloat.
adv.
In, to, or toward, the rear; as, to stand back; to step back.
n.
A machine or contrivance for turning a spit; a smoke jack, or kitchen jack.
a.
Being at the back or in the rear; distant; remote; as, the back door; back settlements.
n.
A mechanical contrivance, an auxiliary machine, or a subordinate part of a machine, rendering convenient service, and often supplying the place of a boy or attendant who was commonly called Jack
v. t.
To put in a sack; to bag; as, to sack corn.
v. t.
To bear or carry in a sack upon the back or the shoulders.
n.
See Jack-with-a-lantern, under 2d Jack.
n.
A pitcher or can of waxed leather; -- called also black jack.
v. i.
To hunt game at night by means of a jack. See 2d Jack, n., 4, n.
n.
A flag, containing only the union, without the fly, usually hoisted on a jack staff at the bowsprit cap; -- called also union jack. The American jack is a small blue flag, with a star for each State.
n.
An envelope, or wrapping, of sheets used in hydropathic practice, called dry pack, wet pack, cold pack, etc., according to the method of treatment.
n.
see Ils Jack.
n.
A bar of iron athwart ships at a topgallant masthead, to support a royal mast, and give spread to the royal shrouds; -- called also jack crosstree.