Definition of dud noun from the Oxford Advanced American Dictionary

     

    dud

     noun
    noun
    NAmE//dʌd//
     
     
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  1. 1[countable] (informal) a thing that is useless, especially because it does not work correctly Two of the fireworks in the box were duds.
  2. 2 duds [plural] (old-fashioned) (slang) clothes