n.
Pronunciation: ' b ə mp
Function: noun
Etymology: probably imitative of the sound of a blow
Date: 1581
1 : a relatively abrupt convexity or protuberance on a surface: as a : a swelling of tissue b : a cranial protuberance
2 a : a sudden forceful blow, impact, or jolt b : DEMOTION
3 : an act of thrusting the hips forward in an erotic manner