Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A pivoted lever used in an internal combustion engine to transfer cam or pushrod motion to a valve stem.

from The Century Dictionary.

  • noun An arm or lever attached to a rock-shaft so that it may receive or give a reciprocating angular motion.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a lever pivoted at the center; used especially to push a valve down in an internal-combustion engine

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