Definition of washer noun from the Oxford Advanced American Dictionary

     

    washer

     noun
    noun
    NAmE//ˈwɑʃər//
     
    , NAmE//ˈwɔʃər//
     
     
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  1. 1a small flat ring made of rubber, metal, or plastic placed between two surfaces, for example under a nut to make a connection tight
  2. 2(informal) a washing machine see also dishwasher
See the Oxford Advanced Learner's Dictionary entry: washer