Definition of poser noun from the Oxford Advanced American Dictionary

     

    poser

     noun
    noun
    NAmE//ˈpoʊzər//
     
     
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  1. 1 (also poseur) (disapproving) a person who behaves or dresses in a way that is intended to impress other people and is not sincere He's such a poser on the dance floor.
  2. 2(informal) a difficult question or problem synonym puzzler
See the Oxford Advanced Learner's Dictionary entry: poser