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Definition of keister

keister

/ˈkiːstər/
kei · ster
Plural:keisters
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keister Lexical Profile

keister Game Scores & Validity

• noun

1

North American The human buttocks or rear end (used in informal or humorous contexts).

Example

"He slipped on the icy sidewalk and landed squarely on his keister."

2

North American A suitcase, satchel, strongbox, or safe (in dated underworld slang).

Example

"The traveling vendor packed his wares neatly into a leather keister before boarding the train."

Synonyms
View all synonyms for keister

• Rhymes for keister

• Nearby Words

keila
keila falls
keiskamma
keister
kelloggia
kells
kelly

Word Origin & Etymology

Originated in late 19th-century American underworld slang, probably borrowed from German 'Kiste' or Yiddish 'kestl', meaning 'chest' or 'box'. It initially referred to a satchel, suitcase, or burglar's safe before shifting in the 1930s to mean the human buttocks.

Cite this Entry

Wordmom. (2026). Definition of Keister. In Wordmom Dictionary. Retrieved Nov 2, 2026, from https://wordmom.com/dictionary/keister
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