cogwheel Hear it!

cogwheel definition

cog·wheel (käghwēl′, -wēl′)

noun

a wheel with a rim notched into teeth, which mesh with those of another wheel or of a rack to transmit or receive motion

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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