bump - definition and synonyms

noun [countable] 

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/bʌmp/
singularbump
pluralbumps
  1. 1
    a raised part on a surface

    Every time I went over a bump in the road, my bicycle chain came off.

    1. a.
      a raised part on your skin where you have been injured

      Her body was covered in bumps and bruises.

  2. 2
    a hit or knock to a part of your body

    She got a nasty bump on the back of her head.

    1. a.
      a hit or knock against something solid

      We felt the bump and knew the boat had run aground.

    2. b.
      the sound of something hitting against something solid