rear end

noun

: the part of the body you sit on

: the back part of something (such as a vehicle)

Full Definition of REAR END

See rear end defined for English-language learners

circa 1930

Synonyms: backside, behind, booty (also bootie) [slang], bottom, breech, bum, buns, butt, caboose, can, cheeks, derriere (or derrière), duff, fanny, fundament, hams, haunches, heinie [slang], hunkers, keister (also keester) [slang], nates, posterior, rear, buttocks, rump, seat, tail, tail end, tush [slang]

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