Definition of poser noun from the Oxford Advanced Learner's Dictionary

     

    poser

     noun
    noun
    BrE BrE//ˈpəʊzə(r)//
     
    ; NAmE NAmE//ˈpoʊzər//
     
     
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  1. 1(informal) a difficult question or problem synonym puzzler
  2. 2(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.
See the Oxford Advanced American Dictionary entry: poser