0 a group of four people meeting for a social activity, such as playing a game or having a meal -- （聚在一起玩游戏、吃饭等的）四人组
I think it is at least a foursome.
But we must accept that it is more and more a twosome and not a foursome.
Perhaps this game is a foursome.
In the next scene the foursome are then shown, with their tricks to impress girls.
In her first appearance, a foursome of villains steal from her while she is at a party.
After graduating from college, the foursome and other friends hung out and often shared living quarters.
She was not replaced; the foursome became a trio.
She is a voice of reason for the foursome but, more often than not, is ignored.
