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Generalization of the Jack polynomial
In mathematics, the Jack function is a generalization of the Jack polynomial, introduced by Henry Jack. The Jack polynomial is a homogeneous, symmetric
Jack_function
Mechanical, hydraulic, or pneumatic, lifting device
screw thread. A hydraulic jack uses hydraulic power. The most common function of a jack is as a car jack, floor jack or garage jack, which lift vehicles so
Jack_(device)
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)
{\displaystyle C_{\kappa }^{(\alpha )}(X)} is the "C" normalization of the Jack function. If X {\displaystyle X} and Y {\displaystyle Y} are two m × m {\displaystyle
Hypergeometric function of a matrix argument
Hypergeometric_function_of_a_matrix_argument
polynomial Heckman–Opdam polynomials Hermite polynomials Hurwitz polynomial Jack function Jacobi polynomials Koornwinder polynomials Kostka polynomial Kravchuk
List_of_polynomial_topics
Modifying the visible features of areas of land
in your house (each one has a function). Outdoor spaces have a vast amount of flexibility as far as materials and function. It is often said the only limitation
Landscaping
Scottish mathematician
Henry Jack FRSE (6 July 1917 – 5 January 1978) was a Scottish mathematician at University College Dundee. The Jack polynomials are named after him. His
Henry_Jack
Cryptographic hash function
BLAKE is a cryptographic hash function based on Daniel J. Bernstein's ChaCha stream cipher, but a permuted copy of the input block, XORed with round constants
BLAKE_(hash_function)
α = 2 {\displaystyle \alpha =2} case of the C normalization of the Jack function. James, Alan Treleven (1961). "Zonal Polynomials of the Real Positive
Zonal_polynomial
Placeholder variables in programming
documentation. They have been used to name entities such as variables, functions, and commands whose exact identity is unimportant and serve only to demonstrate
Foobar
Device for removing boots
remove the boots, or directly handle them if they are dirty. The function of the boot jack can be approximated with a variety of other objects that may be
Boot_jack
Measure of acidity for very strong acids
http://pubs.acs.org/doi/abs/10.1021/ja01571a016 Liang, Jack Joan-Nan, "The Hammett Acidity Function for Hydrofluoric Acid and some related Superacid Systems"
Hammett_acidity_function
2005 South African comedy film
bid to get rid of Jack, the producer spikes his drink with a fictitious drug, Mama Africa, at a glamorous function, and before long Jack has unwittingly
Mama_Jack
Individual living life form
would have functioned by means of the folded configurations of the RNA replicators resulting from their nucleotide sequences. The philosopher Jack A. Wilson
Organism
Type of knot
The hangman's knot or hangman's noose (also known as a collar during the Elizabethan era) is a knot most often associated with its use in hanging a person
Hangman's_knot
hypergeometric series Adolf Hurwitz: Hurwitz zeta-function Hypergeometric function 2F1 Henry Jack (1917–1978) Dundee: Jack polynomial F. H. Jackson: Jackson derivative
List of eponyms of special functions
List_of_eponyms_of_special_functions
Fictional character created by author Tom Clancy
John Patrick "Jack" Ryan is a character created by American author Tom Clancy in 1984. He is the main character of the Ryanverse series of novels, films
Jack_Ryan_(character)
Hash function that is suitable for use in cryptography
given only its digest. In particular, a hash function should behave as much as possible like a random function (often called a random oracle in proofs of
Cryptographic_hash_function
Multiset analogue of matroids
polymatroid is a polytope associated with a submodular function. The notion was introduced by Jack Edmonds in 1970. It is also a generalization of the notion
Polymatroid
American businessman and technologist
brain function and the application of neural network technologies to the analysis and modelling of fMRI imaging data and brain function. In 1995, Jack Hidary
Jack_Hidary
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
Connectors for wiring of telephone equipment
the device, i.e. the assignment or function of each contact. Modular connectors are specified for the registered jack (RJ) series of connectors, as well
Telephone_jack_and_plug
Study of mental functions and behaviors
mental functions in individual and social behavior. Others explore the physiological and neurobiological processes that underlie cognitive functions and
Psychology
group of low-powered, and in some cases, mentally challenged, teens who function as a support group for disabled individuals living in a group home. In
List_of_The_Boys_characters
American biochemist
Biochemistry at Harvard University, specializing in the structure and function of human histocompatibility proteins and their role in disease. He won
Jack_L._Strominger
following is a list of TV episodes and OVAs for the Japanese anime Black Jack produced by Tezuka Productions. The OVAs were directed by Osamu Dezaki, while
List_of_Black_Jack_episodes
American singer (1958–2009)
February 23, 2017. Retrieved September 12, 2025. The world simply could not function without a solid documentary of Michael Jackson, arguably the most famous
Michael_Jackson
Information content of biological systems
Jack W. Szostak in 2003. They define functional information as follows: the concept of degree of function is introduced, where the degree of function
Functional_information
Mental process dealing with knowledge
with the world. Cognitive processes are typically categorized by their function. Perception organizes and interprets sensory information, such as light
Cognition
Family of connectors typically used for analog signals
and return functions via single 1⁄4 in TRS connectors halves the space needed for insert jack fields which would otherwise require two jacks, one for send
Phone_connector_(audio)
Combinatorial object in representation theory
is (3, 2, 2, 2, 1). In many applications, for example when defining Jack functions, it is convenient to define the arm length aλ(s) of a box s as the number
Young_tableau
Reproductive structure in flowering plants
the flower forms into a fruit, and the other floral structures die. The function of fruit is to protect the seed and aid in its dispersal away from the
Flower
List of characters appearing in the Marvel Cinematic Universe
spiritual leader of the Eternals, who possesses healing abilities and functions as the "bridge" between the Eternals and the Celestial Arishem. Based
Characters of the Marvel Cinematic Universe: A–L
Characters_of_the_Marvel_Cinematic_Universe:_A–L
In mathematics, the p-adic gamma function Γp is a function of a p-adic variable analogous to the gamma function. It was first explicitly defined by Morita
P-adic_gamma_function
(PPD-40), to ensure that agencies can continue the performance of essential functions under a broad range of circumstances. PPD-40 specifies particular requirements
United States federal government continuity of operations
United_States_federal_government_continuity_of_operations
Japanese manga series
doctor Black Jack. Black Jack consists of hundreds of short, self-contained stories that are typically about 20 pages long. Black Jack has also been
Black_Jack_(manga)
Fictional character in the King Kong franchise
Jack Driscoll (credited as John Driscoll in the 1933 film) is a fictional character in the King Kong franchise. In the original 1933 film he was the first
Jack_Driscoll_(character)
1993 US law enforcement siege in Texas
planning for the possibility that a fire would erupt—was a discretionary function for which the government could not be sued. The court also found that the
Waco_siege
Proprietary array programming language
transposed via the function "flip", the column dictionary becomes a table name age -------- john 50 jack 60 q)(flip (enlist `name)!enlist `john`jack)!flip (enlist
Q (programming language from Kx Systems)
Q_(programming_language_from_Kx_Systems)
American biologist
Jack William Szostak FRS (born November 9, 1952) is a Canadian American biologist of Polish British descent, Nobel Prize laureate, university professor
Jack_W._Szostak
Tables comparing general and technical information for common hashes
hash function security/cryptanalysis can be found at hash function security summary. Basic general information about the cryptographic hash functions: year
Comparison of cryptographic hash functions
Comparison_of_cryptographic_hash_functions
Musical artist
Arbor and Detroit. They have released several albums on Norton Records. Jack White, later the leader of the group The White Stripes, played bass on the
The_Hentchmen
1847 novel by Emily Brontë
literary device, a well-known convention taken from the Gothic novel, the function of which is to portray the events more mysteriously and excitingly. Thus
Wuthering_Heights
2011 Musical
Blue Eyes is a 2011 stage musical comedy based on the 1984 film A Private Function, and features music by George Stiles, with lyrics by Anthony Drewe. The
Betty_Blue_Eyes
Electronic musician
We are DMX (1999) The Collapse of the Wave Function LP (2004) Many Worlds (The Collapse Of The Wave Function Volume 4) (2005) The Transactional Interpretation
DMX_Krew
British mathematician
Jack A. Thorne FRS (born 13 June 1987) is a British mathematician working in number theory and arithmetic aspects of the Langlands program. He specialises
Jack_Thorne_(mathematician)
American actor (1972–2026)
feature film appearance was in The Basket. He also appeared in Zoe, Duncan, Jack & Jane, Sol Goode, Feast, X-Men: The Last Stand, and starred in Open Water
Eric_Dane
Intelligence of machines
particular action will change the state in a particular way and a reward function that supplies the utility of each state and the cost of each action. A
Artificial_intelligence
Sexual paraphilia involving feces
distress or impairment in social, occupational, or other important areas of functioning". Furthermore, the DSM-IV-TR notes, "Fantasies, behaviors, or objects
Coprophilia
American art historian (1931–2019)
Jack Wesley Burnham Jr. (born New York City, November 13, 1931 – February 25, 2019) was an American writer and theorist of art and technology, who taught
Jack_Burnham
Alteration in the nucleotide sequence of a genome
have no effect, alter the product of a gene, or prevent the gene from functioning properly or completely. Mutations can also occur in non-genic regions
Mutation
Adelung (1798), Scherwenzel was a variant of Grobhäusern in which the Jacks function as wildcards, called Wenzels or Scherwen(t)zels. This is borne out by
Scherwenzel
American lawyer (born 1969)
Commons has media related to Jack Smith (lawyer). Wikiquote has quotations related to Jack Smith (lawyer). Special Counsel Jack Smith | Department of Justice
Jack_Smith_(lawyer)
West Germanic language
upon for many functions, including the expression of tense, aspect, and mood. Auxiliary verbs form main clauses, and the main verbs function as heads of
English_language
Number
zero function (or zero map) on a domain D. This is the constant function with 0 as its only possible output value, that is, it is the function f defined
0
Statistical inequality
determined distribution function from its associated population distribution function. It is named after Aryeh Dvoretzky, Jack Kiefer, and Jacob Wolfowitz
Dvoretzky–Kiefer–Wolfowitz inequality
Dvoretzky–Kiefer–Wolfowitz_inequality
Laboratory equipment
Laboratory scissor jacks are lifting stages for beakers, flasks, water baths, stirrer, or other lab tools used to elevate equipment height to the user's
Laboratory_scissor_jack
Sexual stimulation of one's own genitals
genital anatomy, sexual sensitivity and function in men using the 'Self-Assessment of Genital Anatomy and Sexual Function, Male' questionnaire". BJU International
Masturbation
Auxiliary engine to slowly rotate big engines
the jacking gear's assistance in rotation can be used when inspecting the shaft, reduction gears, bearings, and turbines. As an auxiliary function, the
Jacking_gear
Military boot
hobnailed jackboot. The hobnailed jackboot has a different design and function from the former type. It is a combat boot designed for marching. It rises
Jackboot
Great Officer of State in the United Kingdom
is, by law, the minister of the Crown responsible for the efficient functioning and independence of the courts. The lord chancellor thus leads the Ministry
Lord_Chancellor
3rd episode of the 2nd season of Schoolhouse Rock!
up to? What's your function? What are you seeking?" – Bob Dorough, Conjunction Junction songwriter Conjunction Junction was Jack Sheldon's Schoolhouse
Conjunction_Junction
2017 film by Stephen Chbosky
directed by Stephen Chbosky, who co-wrote the screenplay with Steven Conrad and Jack Thorne. It is based on the 2012 novel by R. J. Palacio and stars Julia Roberts
Wonder_(film)
American exercise physiologist and coach (1933–2025)
Jack Tupper Daniels (April 26, 1933 – September 12, 2025) was an American exercise physiologist, running coach and a coach of Olympic athletes. Named "The
Jack_Daniels_(coach)
American scientist & professor
J, Lintault L, Newman J, Reczek EE, Weissleder R and Jacks T. 2007. Restoration of p53 function leads to tumor regression in vivo. Nature, 445, 661-665
Tyler_Jacks
American politician (born 1947)
3, 2017. "Jack Bergman's Linkedin page". "Roll Call Member Profile - Rep. Jack Bergman, R-Mich". Roll Call. Retrieved March 11, 2021. "Jack Bergman".
Jack_Bergman
British period crime drama series
as Liam (series 6), an associate of Jack Nelson's. Peter Coonan as Connor Dunn (series 6), an associate of Jack Nelson's. Assaad Bouab as Henri (series
Peaky_Blinders_(TV_series)
English actor (1922–1992)
for Best Actor in a Supporting Role for Trading Places (1983), A Private Function (1984) and Defence of the Realm (1986), and a nomination for the Academy
Denholm_Elliott
2024 American fantasy comedic television series
when he was a child. Tara Strong as Ted's "I Love You" sound bite replay function. MacFarlane also portrays Bill Clinton in the second season Max Burkholder
Ted_(TV_series)
Secret police of the Soviet Union (1934–1946)
organization, and thus had a monopoly on intelligence and state security functions. The NKVD is known for carrying out political repression and the Great
NKVD
Hypothetical life with reversed molecular chirality
chirality tend not to fold or function well, but mirror-image proteins have been constructed that have identical function but on substrates of opposite
Mirror-image_life
American novelist (born 1972)
Player One, making it canonical to the book's fictional universe. The work functions as a prequel to the main novel, focusing on the novel's antagonist Nolan
Andy_Weir
Fictional character in the NBC medical drama
goes out of his way to not talk about his background. His father, John (Jack) Truman Carter Jr. (Michael Gross) is caring but reserved, and very acquiescent
John_Carter_(ER)
Journalist and broadcaster
to question and rebut metropolitan assumptions about its character and function. Hargreaves is remembered for appearing on How, a children's programme
Jack_Hargreaves
Jack's soul when she resurrected him. She ignores Jack's prayers, instead assigning a reaper named Merle to watch over and control Jack. After Jack opens
List of Supernatural and The Winchesters characters
List_of_Supernatural_and_The_Winchesters_characters
Collection of statistical data sets
similar_enough() is a function that checks whether the statistics for the two given data sets are similar enough move_random_points() is a function that randomly
Datasaurus_dozen
Dark fantasy television series (2005–2020)
problem. The first name of Sam and Dean's father was originally Jack, but there was a Jack Winchester residing in Kansas, so Kripke was forced to change
Supernatural (American TV series)
Supernatural_(American_TV_series)
1994 crime film by Quentin Tarantino
that "when Captain Koons enters the living room, we see Walken in his function as an image retrieved from a repertoire of 1970s television and movie versions
Pulp_Fiction
Upper house of the Congress of the Philippines
Commission, and Commission on Audit), among others. In performing this function, the senators (who form one-half of the CA's membership) have substantial
Senate_of_the_Philippines
Sexual stimulation of one's own anus
anal and rectal areas. In men, orgasmic function through genitalia depends in part on the healthy functioning of the smooth muscles surrounding the prostate
Anal_masturbation
2017 American crime drama television series
(seasons 2–3), an assistant district attorney who begins working with Hodges Jack Huston as Felix Babineau (season 2), a skilled neurosurgeon Tessa Ferrer
Mr._Mercedes_(TV_series)
Season of television series
series BoJack Horseman premiered on Netflix on July 22, 2016. As with the first two seasons, season 3 consists of 12 episodes. Will Arnett as BoJack Horseman
BoJack_Horseman_season_3
Cast of neo-Western crime media franchise
that Walt will meet with Jack, then tells Todd to make sure Jack kills Walt at the meeting. Walt uses the meeting to kill Jack and his gang with a machine
List of characters in the Breaking Bad franchise
List_of_characters_in_the_Breaking_Bad_franchise
Object or record accepted as payment
taxes, in a particular country or socio-economic context. The primary functions which distinguish money are: medium of exchange, a unit of account, a
Money
Chinese multinational technology company
Thousand and One Nights because of its universal appeal. On 28 June 1999, Jack Ma, with 17 friends and students founded Alibaba.com, a China-based B2B marketplace
Alibaba_Group
1594 novel by Thomas Nashe
literary contributions. Henry Howard, Earl of Surrey functions as a sustained travel partner for Jack, and the two journey to Italy to fulfill the Earl's
The_Unfortunate_Traveller
American business executive (1935–2020)
dubbed "Neutron Jack" (in reference to the neutron bomb) for eliminating employees while leaving buildings intact. In his autobiography Jack: Straight from
Jack_Welch
2012 film by Robert Zemeckis
produced by Walter F. Parkes, Laurie MacDonald, Steve Starkey, Zemeckis, and Jack Rapke. The film stars Denzel Washington as William "Whip" Whitaker Sr., an
Flight_(2012_film)
English computer scientist (1912–1954)
first-class honours in mathematics. His dissertation, On the Gaussian error function, written during his senior year and delivered in November 1934 proved a
Alan_Turing
Word processor
the general public. It was also notable for its very fast cut-and-paste function and unlimited number of undo operations, which are due to its usage of
Microsoft_Word
Mental disorder
distress caused by the obsession, to the extent where it impairs general function. OCD has been described since antiquity and has affected numerous notable
Obsessive–compulsive_disorder
2000 film by Jay Roach
Focker, a nurse who visits his girlfriend Pam's parents, overprotective Jack (Robert De Niro) and pacifistic Dina (Blythe Danner), and suffers from a
Meet_the_Parents
English musician (born 1943)
for the theatrical show parody "Jumpin' Jack", written by Lyle Victor Albert. In the show, the protagonist, Jack, is "a member of that ever-expanding, worldwide
Mick_Jagger
Checking software against a standard
from a serialization function should be accepted by the corresponding deserialization function, and every output from a sort function should be a monotonically
Software_testing
Machine learning technique
Conference on Learning Representations. Clark, Jack; Amodei, Dario (21 December 2016). "Faulty reward functions in the wild". OpenAI. Lee, Harrison; Phatale
Reinforcement learning from human feedback
Reinforcement_learning_from_human_feedback
Jack (1982). Linguistic Analysis of the Function of Kanji in Modern Japanese. 27th International Conference of Orientalists in Tokyo. Halpern, Jack (1985)
Jack_Halpern_(linguist)
Symbolic serpent with its tail in its mouth
solutions of the self-referential Ouroborus equation f(f) = f, for an unknown function f, a way that mathematicians had not imagined before Rosen. Second-order
Ouroboros
English actress
Wire In The Blood. Her film credits include Britannia Hospital, A Private Function, Pierrepoint and Steven Spielberg's War Horse. Her one-woman show Yours
Maggie_Ollerenshaw
modeling), polynomial functions and rational functions are sometimes used as an empirical technique for curve fitting. A polynomial function is one that has
Polynomial and rational function modeling
Polynomial_and_rational_function_modeling
Indian politician and businessman (1915–1989)
Konkani: Jak Siker; 20 April 1915 – 17 October 1989), better known as Dr. Jack de Sequeira, was an Indian politician and businessman who is widely considered
Jack_de_Sequeira
JACK FUNCTION
JACK FUNCTION
Male
English
Scottish form of English Jack, JOCK means "God is gracious."
Female
English
Pet form of English Jackalyn, JACKI means "supplanter."
Male
Polish
Modern form of Polish Jacenty, JACEK means "hyacinth flower."
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).
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.
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.
Boy/Male
Christian & English(British/American/Australian)
Godly
Surname or Lastname
English and North German
English and North German : patronymic from Jack.
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
Finnish
Short form of Finnish Jaako, JAAK means "supplanter."
Girl/Female
Australian, Netherlands, Portuguese
Variant of Jack
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
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
Originally a short form of surnames, mostly Scottish, beginning with Mac-, MACK means "son of," it is now sometimes given as a forename.Â
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.
Female
Native American
Native American Tupi name JACI means "moon."
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.
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
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."
JACK FUNCTION
JACK FUNCTION
Girl/Female
Muslim/Islamic
Beautiful graceful
Boy/Male
Hindu
Priest name, Merciful
Girl/Female
Hindu, Indian
Seeking
Girl/Female
German
Renowned Warrior; Famous Warrior
Boy/Male
Tamil
Representative of God, A type of a demi God
Girl/Female
Gujarati, Hindu, Indian
Young One
Boy/Male
Hindu
Girl/Female
French American Spanish English Latin
Bond.
Boy/Male
Latin
Strong and healthy.
Boy/Male
Hindu, Indian
Love
JACK FUNCTION
JACK FUNCTION
JACK FUNCTION
JACK FUNCTION
JACK FUNCTION
v. t.
To move or lift, as a house, by means of a jack or jacks. See 2d Jack, n., 5.
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.
A hood or other device placed over a chimney or vent pipe, to prevent a back draught.
n.
see Ils 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.
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.
A machine or contrivance for turning a spit; a smoke jack, or kitchen jack.
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.
See Jack-with-a-lantern, under 2d Jack.
v. i.
To make a back for; to furnish with a back; as, to back books.
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
n.
A popular colloquial name for a sailor; -- called also Jack tar, and Jack afloat.
a.
Being at the back or in the rear; distant; remote; as, the back door; back settlements.
v. i.
To write upon the back of; as, to back a letter; to indorse; as, to back a note or legal document.
n.
A pitcher or can of waxed leather; -- called also black 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.
v. t.
To bear or carry in a sack upon the back or the shoulders.
adv.
In, to, or toward, the rear; as, to stand back; to step back.
v. t.
To put in a sack; to bag; as, to sack corn.
v. i.
To hunt game at night by means of a jack. See 2d Jack, n., 4, n.