Definition for keester (2 of 2)
Origin of keister
British Dictionary definitions for keester
noun slang, mainly US
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).