- Usually buttocks.
- (in humans) either of the two fleshy protuberances forming the lower and back part of the trunk.
- (in animals) the rump.
- Sometimes buttocks. Nautical. the aftermost portion of a hull above the water line and in front of the rudder, merging with the run below the water line.
Origin of buttock
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for buttock
He knew that the counter and buttock must be well under water.Blow The Man Down
The triangles were of the usual pattern, and the flogging was on the buttock.Prisoners Their Own Warders
J. F. A. McNair
The point of the buttock (O) is the rearmost point of the pelvis.The Horsewoman
Alice M. Hayes
His thigh, from knee to buttock, was torn out by a piece of German shell.The Backwash of War
Ellen N. La Motte
Pigs, geese, and the buttock of beef are all excellent baked.Mrs. Hale's Receipts for the Million
Sarah Josepha Hale
- either of the two large fleshy masses of thick muscular tissue that form the human rumpSee also gluteus Related adjectives: gluteal, natal
- the analogous part in some mammals
C13: perhaps from Old English buttuc round slope, diminutive of butt (unattested) strip of land; see butt 1 -ock
Word Origin and History for buttock
late 13c., singular of buttocks (q.v.).
Online Etymology Dictionary, © 2010 Douglas Harper
- Either of the two rounded prominences on the human torso that are posterior to the hips and formed by the gluteal muscles and underlying structures.
- buttocks The rear pelvic area of the human body.