trunnion Hear it!

trunnion definition

trun·nion (trun′yən)

noun

  1. either of two projecting pivots, located on each side of a cannon or its mount, by which the muzzle is raised and lowered
  2. either of any similar pair of pins or pivots

Etymology: Fr trognon, a stump, trunk

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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