Foursome (noun)

1. A group of four people.
2. A type of golf match played by four people in which each player plays a separate ball and the better score on each hole counts as the team score.
3. A type of sexual activity involving four people.

Origin:

Late 16th century: from four + -some.

Examples:

1. The foursome set off on their hike early in the morning.
2. The foursome had a friendly golf match and enjoyed each other's company.
3. The foursome enjoyed a dinner together at a fancy restaurant.
4. The foursome was excited to play a round of golf together.
5. The foursome had a lot of fun playing mini golf and trying to get a hole-in-one.