Definition of whisker noun from the Oxford Advanced American Dictionary

     

    whisker

     noun
    noun
    NAmE//ˈwɪskər//
     
     
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  1. 1[countable] any of the long stiff hairs that grow near the mouth of a cat, mouse, etc.
  2. 2 whiskers [plural] (old-fashioned or humorous) the hair growing on a man's face, especially on his cheeks and chin
  3. Idioms
    be, come, etc. within a whisker of something/doing something
     
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    to almost do something They came within a whisker of being killed.
    by a whisker
     
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    by a very small amount
See the Oxford Advanced Learner's Dictionary entry: whisker