- keester
- AND keyster; kiester [“kista*-]1. n. a chest; a suitcase.□ The old lady was hauling the most enormous keester.□ The keester was full of cash.2. n. the buttocks; the anus.□ Get your keester over here!□ He fell flat on his keyster.
Dictionary of American slang and colloquial expressions. 2015.