- the buttocks; rump.
Origin of keister
Related Words for keesterbackside, rump, derriere, fanny, buttocks, duff, bottom, back, seat, tail, tush, can, butt, moon, rear, cheeks, keester, tuchis
- the rump; buttocks
- a suitcase, trunk, or box
Word Origin for keister
Word Origin and History for keester
"buttocks," 1931, perhaps transferred from underworld meaning "safe, strongbox" (1914), earlier "a burglar's toolkit that can be locked" (1881); probably from British dialect kist (northern form of chest) or its German cognate Kiste "chest, box." The connection may be via pickpocket slang sense of "rear trouser pocket" (1930s).