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Meaning of dud

dud

Pronunciation: (dud), [key]
— n.
  1. a device, person, or enterprise that proves to be a failure.
  2. a shell or missile that fails to explode after being fired.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
  • dud (Thesaurus)