swinger

中文： 交换配偶的人

1. One who swings.
2. A person who practices swinging (sex with different partners).
3. A bet in which the bettor must correctly pick two runners to finish in any of the places in any order.
4. A performer of swing music or whose style is influenced by swing.
5. A swing voter. (informal)
6. A swing ride.
7. A passenger on a motorcycle's sidecar who athletically moves from one side to the other to alter the weight distribution.

复数 swingers