Definition of John Doe noun from the Oxford Advanced American Dictionary

     

    John Doe

     noun
    noun
    NAmE//ˌdʒɑn ˈdoʊ//
     
    [usually singular]
     
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  1. 1a name used for a person whose name is not known or is kept secret, especially in a court of law
  2. 2an average man compare Jane Doe
See the Oxford Advanced Learner's Dictionary entry: John Doe