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a device around which magnetic tape, film, cotton, etc., can be automatically wound, with plates at top and bottom to prevent it from slipping off


(graphic arts)
A flanged cylinder in a camera on which unprocessed roll film is wound.
(mechanical engineering)
The drum of a hoist.
The movable part of a slide-type hydraulic valve.
A cylinder made of wood or other material on which yarn is held during spinning or weaving.


(operating system)


An object-oriented logic programming language.

["An Experience with a Prolog Based Language", K. Fukunaga et al, SIGPLAN Notices 21(11):224-231 (Nov 1986) (OOPSLA '86)].


(operating system)
To send files to some device or program (a "spooler" or demon) that puts them in a queue for later processing of some kind. Without qualification, the spooler is the "print spooler" controlling output of jobs to a printer; but the term has been used in connection with other peripherals (especially plotters and graphics devices) and occasionally even for input devices.

The term "SPOOL" has been attributed to IBM as an acronym for Simultaneous Peripheral Operation On-Line but it's widely thought to have been contrived for effect.

References in periodicals archive ?
Number of Blocks and Finished Size 49 Spool Blocks 12" x 12"
SmartRoute spool technology allows an installer to payout exactly the amount of cable needed from the panel, leaving the remaining cable safely stored within the panel.
What you''''ll need: Ribbon spool Pencil Masking tape Dried peas or beans Acrylic paint Colourful stickers How to make it: 1.
Calemard self-traverse technology guarantees to produce at high speed (600 m/min) spools of a strip with no stress, no tension, no elongation and no twist.
Vericom Thermostat Wire is available in white in 18 AWG and variations between 2 through 12 conductors, CL2, with 18/2, 18/3 and 18/4 white available in 500 foot spools, while 18/5 through 18/12 brown are available in 250 foot spools.
Add the other two spools and fold over the top of the bag.
Pittsfield Plastics' primary business is still proprietary spools and reels.
The sensor continually references the distance from the spool core up to the highest point that wire or other material will be spooled.
The Polar Pop-Up is a wind- and freeze-proof design with a sealed tube with a tripod stand and a line spool mounted at the base.
The spools were worn in each of an adult's ears in a large hole that had gradually been expanded since childhood.
Cajun Line's new Cajun Fluorocarbon is available in 4- through 20-pound test in 200-yard filler spools, selling for $17.
Split spools for line-shaft conveyors replace standard, one-piece line-shaft spools to save labor and reduce conveyor downtime.