0 past simple and past participle of bump
2 to travel, usually in a vehicle, in an uncomfortable way because the surface you are moving over is rough:
3 to remove someone from a particular position, sometimes to a different one:
He's got a bruise where he bumped his leg against the corner of the table.
The removal men kept bumping the furniture against the walls and chipping the paint.
Each subject was read a vignette about two boys who accidently bumped into each other in a school hallway.
They bumped into each other in what seemed to be a very minor collision, with neither one falling down.
We found that the cat responded quite differently depending on when its leg bumped the board.
