/fawr"seuhm, fohr"-/ , n.
1. a company or set of four; two couples; a quartet: to make up a foursome for bridge.
2. Golf.
a. a match between two pairs of players, each of whom plays his or her own ball.
b. Also called Scotch foursome . a match between two pairs of players, in which each pair plays one ball and partners stroke alternately.
adj.
3. consisting of four persons, things, etc.; performed by or requiring four persons.
[ 1540-50; FOUR + -SOME 2 ]