tappet Hear it!

tappet definition

tap·pet (tap′it)

noun

a sliding rod in an engine or machine moved by intermittent contact with a cam and used to move another part, as a valve

Etymology: tap + -et

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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