I. ˈ ̷ ̷səm noun
( -s )
Etymology: Middle English foursum, from (assumed) Middle English foure sum one of four, from Old English fēowra sum, from fēowra (gen. of fēower four) + sum some, one — more at four , some
1.
a. : a group of four : quartet
b. : two couples each of which consists of a man and a woman
2.
a. : a golf match between two pairs of partners each of whom plays his own ball — compare four-ball
b. : a similar match with each side playing one ball and partners striking alternately — called also Scotch foursome
II. adjective
1. Scotland : suitable for four persons
2. Scotland : requiring four participants