foursome

Noun

foursome (plural foursomes)

1. A group of four, a quartet or a game (such as golf) played by four players, especially by two teams of two.
   • The fired-up foursome takes itself very seriously, singing politically charged lyrics, which, in the tradition of Strife and Damnation AD, are strategically placed in the middle of slamming, moshable breakdowns.1999, CMJ New Music Report, volume 59, number 631, page 28
   • And Ms. Davies’s 7,000-square-foot guesthouse, the only building from the original estate to survive, is already a favorite among card-playing foursomes and others who want to lounge on the second-story deck and watch dolphins bob in the whitecapped waves.2009 August 30, Laura M. Holson, “A Dip Into Hollywood”, in The New York Times

   Synonyms:

   quaternion

2. A sex act between four people.

   Synonyms:

   fourgie