American English

Definition of bump noun from the Oxford Advanced American Dictionary



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  1. 1the action or sound of something hitting a hard surface He fell to the ground with a bump. We could hear loud bumps from upstairs where the children were playing.
  2. 2a swelling on the body, often caused by a blow synonym lump She was covered in bumps and bruises. How did you get that bump on your forehead?
  3. 3a part of a flat surface that is not even, but raised above the rest of it a bump in the road see also bumpy, bumpy
  4. Idioms
    come back/down to earth (with a bang/bump), bring somebody (back) down to earth (with a bang/bump) (informal)
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    to return, or to make someone return, to a normal way of thinking or behaving after a time when they have been very excited, not very practical, etc. see also down-to-earth
    things that go bump in the night (informal) (humorous)
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    used to refer to ghosts and other supernatural things that cannot be explained There are mysterious lights in the sky and things that go bump in the night.
See the Oxford Advanced Learner's Dictionary entry: bump