D defs.my
Entry 2 senses Webster, 1913

High five

· IPA /haɪ faɪv/
01 See Cinch (the game).
  1. 1.
    See Cinch (the game). See: Cinch
  2. 2.
    a celebratory or mutually congratulatory gesture between two persons performed by each slapping the other's raised right hand. Also used as a verb.