bump bump /ˈbʌmp/

noun

1. An impact (as from a collision)  ( bump , blow )
   an impact (as from a collision)
    The bump threw him off the bicycle
   the bump threw him off the bicycle
   
2. Something that bulges out or is protuberant or projects from its surroundings  ( bump , excrescence , extrusion , gibbosity , gibbousness , hump , jut , prominence , protrusion , bulge , protuberance , swelling )
   something that bulges out or is protuberant or projects from its surroundings
    The gun in his pocket made an obvious bulge
   the gun in his pocket made an obvious bulge
    The hump of a camel
   the hump of a camel
    He stood on the rocky prominence
   he stood on the rocky prominence
    The occipital protuberance was well developed
   the occipital protuberance was well developed
    The bony excrescence between its horns
   the bony excrescence between its horns
   
3. A lump on the body caused by a blow  ( bump )
   a lump on the body caused by a blow
   

verb

1. () Knock against with force or violence  ( bump , knock )
   knock against with force or violence
    My car bumped into the tree
   My car bumped into the tree
   
2. () Dance erotically or dance with the pelvis thrust forward  ( bump )
   dance erotically or dance with the pelvis thrust forward
    Bump and grind
   bump and grind
   
3. () Come upon, as if by accident; meet with  ( chance , happen , bump , encounter , find )
   come upon, as if by accident; meet with
    We find this idea in Plato
   We find this idea in Plato
    I happened upon the most wonderful bakery not very far from here
   I happened upon the most wonderful bakery not very far from here
    She chanced upon an interesting book in the bookstore the other day
   She chanced upon an interesting book in the bookstore the other day
   
4. Remove or force from a position of dwelling previously occupied  ( bump , dislodge )
   remove or force from a position of dwelling previously occupied
    The new employee dislodged her by moving into her office space
   The new employee dislodged her by moving into her office space
   
5. Assign to a lower position; reduce in rank  ( break , bump , kick downstairs , demote , relegate )
   assign to a lower position; reduce in rank
    She was demoted because she always speaks up
   She was demoted because she always speaks up
    He was broken down to Sergeant
   He was broken down to Sergeant