Search references for SPINDLE TOOL. Phrases containing SPINDLE TOOL
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Rotary unit of a machine tool
In machine tools, a spindle is a rotating axis of the machine, which often has a shaft at its center. The shaft itself is called a spindle, but also,
Spindle_(tool)
System for securing cutting tools or toolholders in a spindle
taper is a system for securing cutting tools, workholders or toolholders in the spindle of a machine tool or power tool. A male member of conical form (that
Machine_taper
Computer control of machine tools
axes, normally at least two (X and Y), and a tool spindle that moves in the Z (depth). The position of the tool is driven by direct-drive stepper motors or
Computer_numerical_control
Two separate velocities in machine tool practice, cutting speed and feed rate
motion of the tool and workpiece; when the workpiece rotates (e.g., in turning and boring), the units are almost always distance per spindle revolution (inches
Speeds_and_feeds
Removal of material from a workpiece using rotating tools
coordinate system #1 M03 – spindle start (clockwise) M04 – spindle start (counter-clockwise) M05 - spindle stop M06 - tool change M08 - coolant on M09
Milling_(machining)
Topics referred to by the same term
a straight spike to spin fibers into yarn Spindle (tool), a rotating axis of a machine tool Common spindle and other species of shrubs and trees in genus
Spindle
Clamping mechanism
A drawbar or spindle drawbar is a clamping mechanism for tool/workholders on machine tools. The toolholder or machine taper itself is held by the draw
Drawbar_(machine_tool)
Spike used for spinning fibers into yarn
A spindle is a straight spike, usually made from wood, used for spinning, twisting fibers such as wool, flax, hemp, and cotton into yarn. It is often
Spindle_(textiles)
Machine tool which rotates the work piece on its axis
be mounted to the spindle. Spindles may also have arrangements for work-holding on the left-hand end of the spindle with other tooling arrangements for
Lathe
Weighted object fitted to a spindle
A spindle whorl is a weighted object fitted to a spindle to help maintain the spindle's speed of rotation while spinning yarn. A spindle whorl may be a
Spindle_whorl
Drilling tool of prehistoric origin operated by the cord of a bow
A bow drill is a simple hand-operated type of tool, consisting of a rod (the spindle or drill shaft) that is set in rapid rotary motion by means of a cord
Bow_drill
Machine tool used to remove material from a rotating workpiece
incorporate a secondary spindle, or 'sub-spindle', they also incorporate 'live tooling'. Live tools are rotary cutting tools that are powered by a small
Metal_lathe
American machine tool builder
The Van Norman Machine Tool Company was an American machine tool builder from late in the 19th century until the mid-1980s. The company was based in Springfield
Van Norman Machine Tool Company
Van_Norman_Machine_Tool_Company
Tool used to create holes
table and a locking collet that ensures that the cutting tool will not fall from the spindle when lateral forces are experienced against the bit. Although
Drill
Type of hand drill
A brace is a hand tool used with a bit (drill bit or auger) to drill holes, usually in wood. Pressure is applied to the top while the handle is rotated
Brace_(tool)
Tool driven by compressed air supplied by an air compressor
A pneumatic tool, air tool, air-powered tool or pneumatic-powered tool is a type of power tool, driven by compressed air supplied by an air compressor
Pneumatic_tool
Spike used to hold papers for processing
computer: "Do not fold, spindle, or mutilate". The word processor Microsoft Word contains a "spike" function, named after this tool, which allows to cut
Spindle_(stationery)
Clamp used to hold an object with radial symmetry, especially a cylinder
exist, such as the cam-lock spindle noses described below). Threaded spindle noses are still built on new machine tools, but only of the low-end variety
Chuck_(engineering)
Bicycle component
crankset to rotate freely. It contains a spindle to which the crankset attaches, and the bearings that allow the spindle and crankset to rotate. The chainrings
Bottom_bracket
Woodworking power tool
The router is a power tool with a flat base and a rotating bit extending past the base. The spindle may be driven by an electric motor or by a pneumatic
Router_(woodworking)
Device used to store elongated and flexible objects
a short film showcasing a person's or organization's previous work. Spindle (tool) Devos, Fred; Le Maillot, Chris; Riordan, Daniel (2004). "Introduction
Reel
Machine for handling or machining metal or other rigid materials
views the headstock spindle itself; but the earliest historical records of a lathe with direct mechanical control of the cutting tool's path are of a screw-cutting
Machine_tool
Drilling machine
construction: Double drill press is a new variant of drill press in which the spindle is on the X and Y axis. the bench top can do a full 360 rotation. Column
Drill_press
Craft
relative to the axis of the lathe, affects the tools and techniques used by the woodturner. In spindle turning, the grain runs lengthwise along the lathe
Woodturning
Stationary woodworking machine
North America or spindle moulder in the UK and Europe), is a stationary woodworking machine in which a vertically oriented spindle drives one or more
Wood_shaper
Computer-controlled cutting machine
computer-controlled cutting machine which typically mounts a hand-held router as a spindle which is used for cutting various materials, such as wood, composites,
CNC_router
Tool for the precise measurement of a component's length, width, and/or depth
frame). The spindle is a very accurately machined screw and the object to be measured is placed between the spindle and the anvil. The spindle is moved by
Micrometer_(device)
Stick or staff for holding fibre to be spun
method. The traditional form is a staff held under one's arm while using a spindle – see the figure illustration. It is about 3 feet (0.9 m) long, held under
Distaff
Tool bits used in milling machines
value is also known as "tangential velocity." Spindle speed (S) This is the rotation speed of the tool, and is measured in revolutions per minute (rpm)
Milling_cutter
Tool used on a machine to accurately align the head with the work prior to machining
An edge finder is a rotating tool, meaning the machine spindle must be turning for the tool to work. On one end of a cylindrical shank, a second cylinder
Wiggler_(tool)
tools and equipment such as hand tools, power tools, electrician tools, welding and metal work tools, concrete and masonry equipment, plumbing tools,
List_of_tools_and_equipment
Multinational brand of power tools known primarily for its rotary tools
multinational brand of power tools, focusing on home improvement and hobby applications. Dremel is known primarily for its rotary tools, such as the Dremel 3000
Dremel
Dividing head
most commonly a chuck but can include a collet fitted directly into the spindle on the indexing head, faceplate, or between centers. If the part is long
Indexing_head
Custom-made tool used to control the location or motion of another tool
A jig is a type of custom-made tool used to control the location or motion of parts or other tools. A jig's primary purpose is to provide repeatability
Jig_(tool)
Unit of velocity combining surface speed and feet per minute
unit of speed). The faster the spindle turns, and/or the larger the diameter, the higher the SFM. The goal is to tool a job to run the SFM as high as
Surface_feet_per_minute
Manufacturing processes using tools that can move in 4 or more directions
translated linearly along three axes (typically x, y, and z) and the tooling spindle is capable of rotation about an additional two axes. There are now
Multiaxis_machining
the floor type boring machine has a stationary workpiece while the spindle and tooling move along multiple axes to perform operations. Modern boring machines
Horizontal_boring_machine
American machine tool builder
machine tool builder headquartered in Oxnard, California. The company designs and manufactures lower cost machine tools and specialized accessory tooling, mostly
Haas_Automation
Type of saw
introduced in 1947 by Scintilla AG (later acquired by Bosch). A jigsaw power tool is made up of an electric motor and a reciprocating saw blade. Jigsaws with
Jigsaw_(tool)
Woodturning method
removed by running a turning tool down the slope of the wood from a larger diameter in the wood to a smaller diameter. Spindle turning is the method used
Spindle_turning
Tools to create screw threads
higher and .15 slower for 40 tpi or finer) Improper spindle speed. To overcome these problems, special tool holders are required to minimize the chances of
Tap_and_die
Special type of recessed surface
cutting tool. Undercut - Any indentation or protrusion in a shape that will prevent its withdrawal from a one-piece mold. In milling the spindle is where
Undercut_(manufacturing)
positioning and spindles are very accurate (far more so than a manual milling machine or lathe). It is used almost exclusively by tool and die makers in
Jig_grinder
Conical hole cut so a fastener can be inserted flush with the surface
usually be had by countersinking by hand (as opposed to running the tool in a powered spindle). The slow speed and sensitive feed tend to prevent chatter. With
Countersink
Process used to cut teeth into gears
the customary patent drawings. The hob cutting tool and the gear train to provide the appropriate spindle speed ratio are clearly visible. Knowledge of
Hobbing
Hand tool
A gimlet is a hand tool for drilling small holes, mainly in wood, without splitting. It was defined in Joseph Gwilt's Architecture (1859) as "a piece of
Gimlet_(tool)
Sensor-less machine tool monitoring is done by measuring internal drive signals such as: feed motor current spindle motor current spindle power Combined measuring
CNC machine tool monitoring by AE sensors
CNC_machine_tool_monitoring_by_AE_sensors
Non-rotary cutting tool used in machining
or two tool bits are mounted. The bits spin around with the rotation of the spindle, taking facing cuts. Fly cutters are an application of tool bits where
Tool_bit
Lathe with a controlled cutting process
broach holder is mounted stationary while its internal live spindle and end cutting broach tool are driven by the workpiece. As the broach is fed into or
Automatic_lathe
Machine for accurately cutting screw threads
to the spindle with a certain gear ratio for each thread pitch. Every degree of spindle rotation is matched by a certain distance of linear tool travel
Screw-cutting_lathe
Machine used to create teeth on gears
downward linear motion of the cutter spindle together with the cutter . Return Stroke: The upward linear travel of the spindle and cutter to withdraw the cutter
Gear_shaper
The term bicycle tools typically refers to specialty tools used on bicycles, as opposed to general purpose mechanical tools. such as spanners and hex wrenches
Bicycle_tools
Process of making items from metal
a cylindrical surface with a single point tool. The workpiece is rotated on a spindle and the cutting tool is fed into it radially, axially or both. Producing
Metalworking
Cylindrically symmetrical element in furniture
A spindle, in furniture, is a cylindrically symmetric shaft, usually made of wood. A spindle is usually made of a single piece of wood and typically has
Spindle_(furniture)
Type of lens
on one side. Aspheric surfaces can also be made by polishing with a small tool with a compliant surface that conforms to the optic, although precise control
Aspheric_lens
Garden tool for trimming grass
it uses a whirling monofilament line which protrudes from a rotating spindle at the end of a long shaft topped by a gasoline engine or electric motor
String_trimmer
Fixed machine tool used for processing wood
Radial arm saw Scroll saw Spindle moulder (Wood shaper) Stationary sanders, including stroke sanders, oscillating spindle sander, belt sander, disc sander
Woodworking_machine
Method of turning fiber into yarn or thread
Originally done by hand using a spindle whorl, starting in the 500s AD the spinning wheel became the predominant spinning tool across Asia and Europe. The
Spinning_(textiles)
Fastening tool
pressure. In the United Kingdom the term cramp is often used instead when the tool is for temporary use for positioning components during construction and woodworking;
Clamp_(tool)
Apparatus for securing a workpiece
ISSN 0032-4558. "Popular Mechanics". Hearst Magazines. November 1958. "Tools for Setting up a Blacksmith Shop - The Ploughshare Institute". 8 May 2019
Vise
American company
The Bullard Machine Tool Company was a large American machine tool builder. It specialized in vertical boring mills and was largely responsible for the
Bullard_Machine_Tool_Company
Type of chuck
with spindle chucks. Although a metric standard, ER collets with internal inch sizes are widely available for convenient use of imperial sized tooling. The
Collet
Handheld power tool for cutting or polishing
two-pin spanner used to attach discs to the grinder's spindle. Although developed originally as tools for rigid abrasive discs, the availability of an interchangeable
Angle_grinder
Machine tool which linearly cuts or grinds the workpiece
woodworking tool, typically with a powered rotating cutting head and manually fed workpiece, usually known simply as a shaper in North America and spindle moulder
Shaper
- Spindle Noses and Tool Shanks for Machining Centers TC 52 - Machine Tool Performance TC 54 - Tool Connection Gages for Machine Tools TC 55 - Tool Identification
ASME_B5
Gently tapered cylinder against which material can be forged or shaped
Wiktionary, the free dictionary. A mandrel, mandril or arbor is a tapered tool against which material can be forged, pressed, stretched or shaped (e.g.
Mandrel
Power tool
Oscillating spindle sander: A sander mounted on a spindle that both rotates and oscillates in and out or up and down along the axis of the spindle. Good for
Sander
Gauge for measuring forces on a machine tool's drawbar
"stuck" tool holders in a spindle, etc., by employing proper preventative maintenance techniques using an accurate electronic gauge and other spindle health
Drawbar_force_gauge
Process of creating circuit boards
control the spindle speed. Spindle speeds can range from 30,000 RPM to 100,000 RPM depending on the milling system, with higher spindle speeds equating
Printed_circuit_board_milling
Electro-mechanical data storage device
bearing in the center of the spindle motor. The orange stripe along the side of the arm is a thin printed-circuit cable, the spindle bearing is in the center
Hard_disk_drive
Gradual failure of cutting tools due to regular use
tool wear, and does not seriously degrade the use of a tool until it becomes serious enough to cause a cutting edge failure. Can be caused by spindle
Tool_wear
Machining process using a grinding wheel
wheel as cutting tool. A wide variety of machines are used for grinding, best classified as portable or stationary: Portable power tools such as angle grinders
Grinding_(abrasive_cutting)
Tool for working with wood
tool for shaping wood using muscle power to force the cutting iron (blade) over the wood surface. Some rotary power planers are motorized power tools
Plane_(tool)
20th-century reconfigurable machine
machined. The RMS, as well as one of its components—the reconfigurable machine tool (RMT)—were invented in 1998 in the Engineering Research Center for Reconfigurable
Reconfigurable manufacturing system
Reconfigurable_manufacturing_system
Coolants and lubricants used in metalworking
Through-tool coolant systems, also known as through-spindle coolant systems, are systems plumbed to deliver coolant through passages inside the spindle and
Cutting_fluid
Localized flat region on a machined workpiece
meaning that the tool manages to reach to the far side of the workpiece (away from the spindle side) and cut back toward the spindle. Such operations
Spotface
Detachable tool tips used for driving screws
"ASME B107.4-2019 – Driving and Spindle Ends for Portable Hand, Impact, Air, and Electric Tools (Percussion Tools Excluded)". ASME. Retrieved 2025-06-01
Screwdriver_bit
Process for shaping conductive metals
table, and spindle head. The spindle head has a servo-mechanism that automatically advances the tool and controls the gap between the cathode (tool) and the
Electrochemical_machining
Metalworking process
is achieved by mounting the dies into the machine's spindle which is rotated by a motor. The spindle is mounted inside a cage containing rollers (looks
Swaging
Multi-spool spinning frame
The spinning jenny is a multi-spindle spinning frame, and was one of the key developments in the industrialisation of textile manufacturing during the
Spinning_jenny
Implement used to remove bark from felled timber
is a similar specialized tool for harvesting agaves. The drawknife also removes bark from felled trees. Bark peeling tools "Bark Spud". Archived from
Bark_spud
Twisting two or more single strands of yarn together to produce stronger yarn
either a spinning wheel or a spindle. When plying, the singles are kept separate, either with the fingers or with a tool. This tool can be anything from the
Plying
Large chisel which is pushed rather than struck
(1985). The Antique Tool Collector's Guide to Value. El Cajon: Windmill Pub. Co. ISBN 0-933846-01-0. Hand Tools & Accessories Tools Used In Timber-frame
Slick_(tool)
Fire making device with rotating rod
to start a fire by friction between a rapidly rotating wooden rod (the spindle or shaft) and a cavity on a stationary wood piece (the hearth or fireboard)
Fire_drill_(tool)
Piece of material left on a workpiece after some operation
is usually an unwanted piece of material and is removed with a deburring tool in a process called deburring. Burrs are most commonly created by machining
Burr_(edge)
Sedimentary structures found on the bases of certain strata
stratigraphically up. Flute casts can be characterized into four types, parabolic, spindle-shaped, comet-shaped, and asymmetrical. Parabolic flute casts are the most
Sole_markings
Device for spinning thread, yarn, or silk from natural or synthetic fibers
stick, called a spindle, which was a very lengthy process. The actual wheel part of a spinning wheel does not take the place of the spindle; instead, it
Spinning_wheel
Release with one to three tracks
record on a player with a quarter-inch spindle by inserting a plastic puck into the hole, or by using a spindle adapter. Although 7 inches remained the
Single_(music)
American manufacturer of industrial tools and household hardware
formerly known as The Stanley Works, is an American manufacturer of industrial tools and household hardware, and a provider of security products. Headquartered
Stanley_Black_&_Decker
Bridgeport Machines, Inc., is a machine tool builder founded in 1938 in the United States of America. It manufactures Milling machines and Lathes. Bridgeport
Bridgeport (machine tool brand)
Bridgeport_(machine_tool_brand)
Intellectual capacity of cetaceans
chimpanzees with 54%, bottlenose dolphins with 42.5%, and elephants with 35%. Spindle cells (neurons without extensive branching) have been discovered in the
Cetacean_intelligence
Machining process
that the tool is moved at. They are chosen based on the workpiece material, cutter material, setup rigidity, machine tool rigidity, spindle power, and
Turning
Tool for recording the cross-sectional shape of a surface
A profile gauge or contour gauge is a tool for recording the cross-sectional shape of a surface. Contour gauges consist of a set of steel or plastic pins
Profile_gauge
Grinding machine
the workbench) but also is important to prevent premature failure of the spindle bearings, as heavy vibration beats them excessively. It is also possible
Bench_grinder
Rectangular blocks of metal used for precise clamping
evenly such as in a milling vise to give adequate height for the cutting tool/spindle to pass over. Parallels come in pairs, which are machined to be the same
Parallel_(engineering)
Company
subsidiary. In 1984, Makino introduced the first commercial high-speed spindle for milling. In 1990, Makino introduced Geometric Intelligence, the first
Makino
Magnification of angular error over distance
For example, slight deviations from parallelism of the spindle axis of a lathe to the tool motion along the bed of the machine can lead to relatively
Abbe_error
Tool for cutting and carving
A chisel is a hand tool with a characteristic wedge-shaped cutting edge on the end of its blade. A chisel is useful for carving or cutting a hard material
Chisel
Form of working wood by means of a cutting tool
also spelt woodcarving, is a form of woodworking by means of a cutting tool (knife) in one hand or a chisel by two hands or with one hand on a chisel
Wood_carving
Tool to indicate whether a surface is level or plumb
friction for the bubble, ensuring greater accuracy and longevity of the tool. Two basic designs exist: tubular (or linear) and bull's eye (or circular)
Spirit_level
SPINDLE TOOL
SPINDLE TOOL
Surname or Lastname
English (northern)
English (northern) : variant of Siddall.
Surname or Lastname
English, German, and Jewish (Ashkenazic)
English, German, and Jewish (Ashkenazic) : occupational name for a spindle maker, from an agent derivative of Middle English spindle, Middle High German spindel, German Spindel, Yiddish shpindl ‘spindle’, ‘distaff’.
Male
Norwegian
Norwegian form of Old Norse Sindri, possibly SINDRE means "sparkling."
Surname or Lastname
English
English : metonymic occupational name for a worker in the linen or hemp industry, from Middle English swingle ‘swingle’, a wooden implement used for beating flax or hemp (Middle Dutch swinghel, from the verb ‘to swing’).Possibly an Americanized spelling of German Zwingel, a topographic name from Middle High German zwingel ‘citadel’.
Surname or Lastname
English, German, or Jewish
English, German, or Jewish : variant of Spindler.
Surname or Lastname
English (Lancashire)
English (Lancashire) : habitational name from a place in Lancashire named Brindle, from Old English burna ‘stream’ + hyll ‘hill’.Altered spelling of South German Brindl, Bründl, a topographic name for someone who lived by a spring or stream, from a diminutive of Middle High German brun(ne) ‘spring’, ‘stream’, or of Brendle or Brendel.
Surname or Lastname
English (northeastern)
English (northeastern) : variant spelling of Tindall.
Surname or Lastname
English
English : possibly a variant of Trumble.Possibly a variant spelling of German Trindl, from a Bavarian and Swabian nickname for a slow person, or alternatively an altered spelling of Drindle, from a South German short form of the personal name Katharina (see Catherine).
Girl/Female
Hindu, Indian
Single
Surname or Lastname
English
English : variant spelling Swindell.Perhaps an Americanized spelling of German Schwind(e)l, a nickname from a diminutive of Middle High German swinde ‘wild’, ‘impetuous’.
Surname or Lastname
English (Lancashire and Yorkshire)
English (Lancashire and Yorkshire) : habitational name from Windhill in West Yorkshire or Windle in Lancashire, both named from Old English wind ‘wind’ + hyll ‘hill’, i.e. a mound exposed to fierce gusts. There is a Windhill in Kent (with the same etymology), but this does not appear to have contributed significantly to the modern surname.
Boy/Male
Indian
Single
Surname or Lastname
English
English : topographic name for someone who lived in a place cleared of woods by fire, from Middle English sengle ‘burnt clearing’.German : from a pet form of a short form of a Germanic person name formed with sing ‘sing’ as the first element.
Surname or Lastname
English
English : variant of Kendall.Variant of German Kindel.
Surname or Lastname
English
English : occupational name for someone who was employed at a lodging house, from Middle English spital ‘lodging house’ (a reduced form of Old French hospital, Late Latin hospitale, from hostis, genitive hospitis, guest).Americanized spelling of eastern German Spittel, metonymic occupational name for someone who worked in an infirmary, from Middle High German spital, spittel ‘hospital’.
Surname or Lastname
English
English : perhaps a metonymic occupational name for a spindle maker, from Middle English spindle, spindel (Old English spinel).Americanized spelling of German and Jewish Spindel.
Surname or Lastname
English
English : variant of Siddall.
Surname or Lastname
English
English : topographic name from Middle English grene ‘green’ + dale ‘dale’, ‘valley’ or hille, hull ‘hill’; alternatively, the surname may have arisen from either of two habitational names meaning ‘green valley’: Greendale in Devon or Grindale in East Yorkshire, or from Grindal (‘green hill’) in Shropshire.South German : from Middle High German grindel ‘latch’, ‘beam’, ‘pole’, probably a metonymic occupational name for a doorman.Respelling of North German Grindel.
Surname or Lastname
English (Lancashire)
English (Lancashire) : topographic name from Old English hind ‘female deer’ + Old English dæl ‘valley’.English (Lancashire) : habitational name from a place in the parish of Whalley, Lancashire, so called from the same first element + Old English hyll ‘hill’.
Surname or Lastname
English
English : in part probably a metonymic occupational name for a soldier in charge of a catapult- or bow-like machine used for throwing heavy missiles, Old French espringalle, Anglo-French springalde. However, Reaney and Wilson, believe the Middle English word springal(d) (which appears to have contributed to the surname), to have a different derivation, perhaps a nickname for a young man, a stripling, from spring (see Spring).
SPINDLE TOOL
SPINDLE TOOL
Male
French
French form of Latin Stephanus, STÉPHANE means "crown."
Boy/Male
Hindu, Indian
King of Steel
Female
Danish
, lark (the bird).
Boy/Male
Welsh
gift from God'.
Boy/Male
Tamil
Marmik | மாரà¯à®®à®¿à®•Â
Intelligent, Influential, Insightful, Perceptive
Girl/Female
Hindu
Name of a Raga
Girl/Female
Arabic, Muslim
Merciful
Girl/Female
Indian
Charming, Beautiful, Famous, Passionate woman, Brilliance famous
Girl/Female
Indian
Flame or luster or glow or shine, Brightness
Surname or Lastname
English (mainly Yorkshire)
English (mainly Yorkshire) : variant of Hollingsworth.
SPINDLE TOOL
SPINDLE TOOL
SPINDLE TOOL
SPINDLE TOOL
SPINDLE TOOL
n.
A shingle; also, a slate for roofing.
v. t.
To cheat defraud grossly, or with deliberate artifice; as, to swindle a man out of his property.
v. i.
To take the irrregular gait called single-foot;- said of a horse. See Single-foot.
imp. & p. p.
of Spindle
n.
The bowfin; -- called also Johnny Grindle.
a.
Not doubled, twisted together, or combined with others; as, a single thread; a single strand of a rope.
n.
A slender rod or pin on which anything turns; an axis; as, the spindle of a vane.
a.
Having the shape of a spindle.
n.
Alt. of Spinelle
a.
Hence, unmarried; as, a single man or woman.
n.
A minute spine.
v. t.
To cover with shingles; as, to shingle a roof.
a.
Bearing a spine; spiniform.
n.
A spindle; a kind of reel; a winch.
imp. & p. p.
of Swindle
n.
A unit; one; as, to score a single.
v. i.
To scatter on; to disperse something over in small drops or particles; to besprinkle; as, to sprinkle the earth with water; to sprinkle a floor with sand.
v. t.
To cover or roof with shindles.
n.
A long and slender stalk resembling a spindle.
n.
Any marine univalve shell of the genus Rostellaria; -- called also spindle stromb.