Definitions from Wiktionary (spool)

▸ noun:  A reel; a device around which thread, wire or cable is wound, especially a cylinder or spindle.
▸ noun:  (aviation) One of the rotating assemblies of a gas turbine engine, composed of one or more turbine stages, a shaft, and one or more compressor or fan stages.
▸ noun:  (computing) A temporary storage area for electronic mail, etc.
▸ noun:  (West Yorkshire) A splinter caught in the skin.
▸ verb:  To wind on a spool or spools.
▸ verb:  (computing) To send files to a device or a program (a spooler or a daemon that puts them in a queue for processing at a later time).
▸ noun:  A small swimming pool that can be used also as a spa.
▸ Also see spool

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