crab - definition and synonyms

noun 

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/kræb/
singularcrab
pluralcrabs
  1. 1
    [countable] a shellfish with ten legs and two large claws used for holding things. Crabs walk sideways.
    1. a.
      [countable/uncountable] the meat from a crab eaten as food

      crab salad

       Synonyms and related words
  2. 2

    crabs

    [plural] medical a medical condition in which you have very small insects in your pubic hair
  3. 3
    [countable] mainly American informal someone who is always annoyed and complains about unimportant things
  4.   From our crowdsourced Open Dictionary
    4
    informal an idiot

    That guy is such a crab.

    Submitted by Brodee Kitchin-Fitz from Australia on 19/08/2014
  5.   From our crowdsourced Open Dictionary
    5
    in the sport of cricket, a bad batsmanSubmitted by Brodee Kitchin-Fitz from Australia on 19/08/2014