swinger

noun
  1. 1

    One who swings.

  2. 2

    A person who practices swinging (sex with different partners).

  3. 3

    A bet in which the bettor must correctly pick two runners to finish in any of the places in any order.

  4. 4

    A performer of swing music or whose style is influenced by swing.

  5. 5

    A swing voter.

noun
  1. 1

    One who swinges.

  2. 2

    Anything very large, forcible, or astonishing.

Source: https://en.wiktionary.org/wiki/swinger