buttock

noun

BUT-uhk/ˈbʌtək/

2 meanings of buttock

1
nouncountable
One of the two rounded, fleshy parts of the body that a person sits on.
Like one of two soft cushions at the back of your body that you sit on.
He slipped on the ice and landed hard on one buttock.
The nurse gave the injection in her left buttock.
UsageIn everyday talk, people often say bottom for both buttocks together and cheek for one side.
Similarbottom, butt, behind, backside, bum
Note

Less common meaning

2
noun
The rounded, outward-curving part of a ship's body at the very back, below the rear deck.

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Origin

From Old English, probably from a word meaning "end" or "end piece." It is a small-form version of "butt."

Checked 31 Oct 2026 · 3 facts

The word comes from Old English. fr.wiktionary.org
The probable source word meant end or end piece. en.wiktionary.org
It is a diminutive, or small-form version, of butt. en.wiktionary.org