Simple Definition of spool

from our Learner's Dictionary

spool

noun

ˈspuːl

plural spools

: a round object that is made to have something (such as thread, wire, or tape) wrapped around it

a spool of film

(US) a spool of thread [=(Brit) a cotton reel]

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“Spool.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/spool. Accessed 20 Jun. 2026.

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