bump

1 bump /ˈbʌmp/ verb
bumps; bumped; bumping
1 bump
/ˈbʌmp/
verb
bumps; bumped; bumping
Britannica Dictionary definition of BUMP
1 
[+ object]
a  : to hit (something, such as part of your body) against an object in a sudden and forceful way — often + against or on
b  : to hit and move (someone or something)
2 
[no object] : to move into or against (someone or something) in a sudden and forceful way
— often + up — sometimes used figuratively
— see also bump into (below), bump up (below)
3 
[+ object]
a  : to move (someone or something) to a different level, position, rank, etc.
b  : to remove (someone or something) from a group or position — often used as (be) bumped
4 
always followed by an adverb or preposition, [no object] : to move in an up and down motion over a rough surface

bump into

[phrasal verb]
bump into (someone) informal
: to meet (someone) by chance : to see and usually talk to (someone you did not expect to see) — see also 1bump 2 (above)

bump off

[phrasal verb]
bump (someone) off or bump off (someone) informal
: to murder (someone)

bump up

[phrasal verb]
bump up (something or someone) or bump (something or someone) up informal
: to move (something or someone) to a higher level, position, rank, etc.
— see also 1bump 2 (above)
2 bump /ˈbʌmp/ noun
plural bumps
2 bump
/ˈbʌmp/
noun
plural bumps
Britannica Dictionary definition of BUMP
[count]
1 
: an area of skin that is raised because it was hit, injured, etc.
— see also goose bumps
2 
: a small raised area on a surface — often used figuratively in U.S. English
— see also speed bump
3 
: an act of something hitting against something else
4 
: the act of pushing the hips forward in a sexual way — compare grind