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

     

    rainmaker

     noun
    noun
    BrE BrE//ˈreɪnmeɪkə(r)//
     
    ; NAmE NAmE//ˈreɪnmeɪkər//
     
     
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  1. 1(especially North American English, business) a person who makes a business grow and become successful
  2. 2a person who is believed to have the power to make rain fall, especially among Native Americans
See the Oxford Advanced American Dictionary entry: rainmaker