Definition of byword noun from the Oxford Advanced Learner's Dictionary

     

    byword

     noun
    noun
    BrE BrE//ˈbaɪwɜːd//
     
    ; NAmE NAmE//ˈbaɪwɜːrd//
     
    [usually singular]
     
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  1. 1a byword for something a person or thing that is a well-known or typical example of a particular quality The name Chanel became a byword for elegance.
  2. 2(especially North American English) a word or phrase that is well known or often used Andy Warhol’s provocative slogan, ‘Everyone will be famous for fifteen minutes’, became a sixties byword.
See the Oxford Advanced American Dictionary entry: byword