Meaning of the word keister in English

What does keister mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

keister

US /ˈkiːstər/
UK /ˈkiːstər/

Noun

a person's buttocks or anus (slang)

Example:
He fell right on his keister.
Get off your keister and do some work!