Definition of mustache from the Oxford Advanced American Dictionary

     

    mustache

     
    NAmE//ˈmʌstæʃ//
     
    , NAmE//məˈstæʃ//
     
     
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  1. 1a line of hair that a man allows to grow on his upper lip
  2. 2mustaches [plural] a very long mustache compare beard
See the Oxford Advanced Learner's Dictionary entry: mustache