keister

or kees·ter

[ kee-ster ]

noun

, Slang.

1. the buttocks; rump.

keister

/ ˈkiːstə /

noun

1. the rump; buttocks
2. a suitcase, trunk, or box

Word History and Origins

Origin of keister¹

1880–85; earlier, as underworld argot, handbag, suitcase, safe; of obscure origin, but words meaning “chest, box” are frequently adduced as sources, e.g., kist, German Kiste, Yiddish kestl, etc.

Word History and Origins

Origin of keister¹

C20: of uncertain origin

Example Sentences

I watched Ted Leonsis, just in case he slipped on his keister.

From Washington Post

Zafu Via huggermugger These delightful Japanese meditation pillows are great from when you want to rest your keister.

From The Daily Beast

Now, Tuttle, set down that there keister of yours—that gripsack—and listen.

From Project Gutenberg