Definition of comb noun from the Oxford Advanced American Dictionary

     

    comb

     noun
    noun
    NAmE//koʊm//
     
     
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  1. 1[countable] a flat piece of plastic or metal with a row of thin teeth along one side, used for making your hair neat; a smaller version of this worn by women in their hair to hold it in place or as a decoration He just had time to wash his face and drag a comb through his hair before going out.
  2. 2[countable, usually singular] the act of using a comb on your hair Your hair needs a comb.
  3. 3[countable, uncountable] = honeycomb
  4. 4[countable] the soft red piece of flesh on the head of a male chicken
  5. Idioms
    go over/through something with a fine-tooth/fine-toothed comb
     
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    to examine or search something very carefully The police went over the house with a fine-tooth comb.
See the Oxford Advanced Learner's Dictionary entry: comb