Main Entry:

¹bump

Pronunciation:

\ˈbəmp\

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: demotion3: an act of thrusting the hips forward in an erotic manner