Definition of stunner noun from the Oxford Advanced American Dictionary

     

    stunner

     noun
    noun
    NAmE//ˈstʌnər//
     
    (informal)
     
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  1. 1a person (especially a woman) or a thing that is very attractive or exciting to look at His daughter is a real stunner. The movie is visually a stunner.
  2. 2something, such as a piece of news, that is very surprising or shocking
See the Oxford Advanced Learner's Dictionary entry: stunner