indian summer

/IH1 N D IY0 AH0 N S AH1 M ER0/
noun
  1. 1

    (possibly offensive) A stretch of sunny and warm, often hazy, days during late autumn.

  2. 2

    (figuratively) The late autumn of life; a late flowering of activity before old age.

  3. 3

    Used other than figuratively or idiomatically: see Indian, summer.