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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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


(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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


(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.

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

print spooler

Software that manages sending jobs to the printer. When an application prints a document, the formatted output is stored on disk, and the print spooler feeds the print images to the printer in the background at slower printing speeds. Storing the print jobs on disk allows multiple printing requests to be queued while the user continues printing from the same or other application without waiting for the current document to be printed. See spooling.


(Simultaneous Peripheral Operations OnLine) The overlapping of low-speed operations with normal processing. Spooling originated with mainframes in order to optimize slow operations such as reading cards and printing. Card input was read onto disk and printer output was stored on disk. In that way, the business data processing was performed at high speed, receiving input from disk and sending output to disk. Subsequently, spooling is used to buffer data for the printer as well as remote batch terminals. See print spooler.
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References in periodicals archive ?
A rear taper, in contrast, would allow line coming off the rear of the spool to make more contact with line at the front as it leaves the spool.
Web's ability to slit and then precisely spool damage-free rolls of the differentiated 3D composite material rests on its custom-designed spooling equipment and the company's deep engineering competence.
He said music lovers from across the province began pouring in to Peshawar with rare spools of Pashto folk singers.
Tip: You may place a glass top on the cable spool to keep the surface smooth and even.
The two test spools (Figures 2 and 3) were manufactured from provided API 5L Spec.
Penny machine quilted swirls in the spools and a feathered arc in each white patch.
The 30-acre site at Hartlepool will allow McDermott to assemble long pipe stalks that will be spooled to its pipe-laying vessel for offshore oil and gas work.
Stiction is primarily affected by the design and construction of piston or spool seals, as there are the parts in direct contact with the cylinder or valve body.
Of course, if you haven''''t got a ribbon spool, fill an old water bottle with peas or beans and decorate that instead.
Of course, if you haven''t got a ribbon spool, fill an old water bottle with peas or beans and decorate that instead.
* Slide the spool over the folded loop so that both loops are hidden from sight.
Typical applications for the spool family are coaxial cable, speaker wire, THHN wire, CATV wire, hose, tubing, chain, and rope.