buttock Hear it!

buttock definition

but·tock (but′ək)

noun

  1. either of the two fleshy, rounded parts at the back of the hips; either half of the rump
  2. the rump

Etymology: ME buttok < OE buttuc, end, short piece of land: see butt & -ock

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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