Informal seat cushion
Keister is informal American slang for the buttocks: Get off your keister and help me.
It also means a suitcase or satchel, and in criminal slang, refers to hiding contraband in one's rectum—a meaning that connects the two senses.
The word sounds dated and mildly humorous rather than vulgar.
IDEA.org / Words / keister
Informal seat cushion
Keister is informal American slang for the buttocks: Get off your keister and help me.
It also means a suitcase or satchel, and in criminal slang, refers to hiding contraband in one's rectum—a meaning that connects the two senses.
The word sounds dated and mildly humorous rather than vulgar.
1. buttocks — rear, Back portion or raise; behind (At the rear); backside (Buttocks or rear); bottom (Lowest point or underside); rump · posterior · derriere · tush · buns · fanny · booty · seat · hindquarters · haunches
2. suitcase — trunk, Main stem or storage; satchel (Strapped bag for books); valise (Small traveling case); luggage (Traveler's packed containers); bag · grip · strongbox · safe · lockbox · stash
BODY POSITION/ANATOMYkeister ≠ kisser Face or mouth, informally; face · mug · puss · frontside · visage
REGISTER/FORMALITYkeister ≠ gluteus maximus Primary posterior hip muscle; buttocks · posterior · fundament · derrière · anus
pain in the keister (Annoying person or situation)
body slang: boobs, butt, tush, bum, rear; rear ends: rear end, behind, backside, buttocks, bottom; prison slang: shank, shiv, yard, cellie, commissary
keisters
Word data: Linguabase (CC0) · www.idea.org/words/keister