Definition of joiner noun from the Oxford Advanced American Dictionary

     

    joiner

     noun
    noun
    NAmE//ˈdʒɔɪnər//
     
     
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  1. 1 a person whose job is to make the wooden parts of a building, especially window frames, doors, etc. compare carpenter
  2. 2 a person who joins an organization, club, etc. She's such a joiner that she belongs to eight or ten clubs.
See the Oxford Advanced Learner's Dictionary entry: joiner