Definition of Indian summer noun from the Oxford Advanced Learner's Dictionary

     

    Indian summer

     noun
    noun
    BrE
     
    ; NAmE
     
     
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  1. 1a period of dry warm weather in the autumn/fall
  2. 2a pleasant period of success or improvement, especially later in somebody’s life As a player, he’s experiencing something of an Indian summer.
See the Oxford Advanced American Dictionary entry: Indian summer