—n. 1. a Rugby play in which, typically, three members of each team line up opposite one another with a group of two and a group of three players behind them, making an eight-person, three-two-three formation on each side; the ball is then rolled between the opposing front lines, the players of which stand with arms around a teammate's waist, meeting the opponent shoulder to shoulder, and attempt to kick the ball backward to a teammate.
2. Brit.a place or situation of confusion and racket; hubbub.
—v.i. to engage in a scrum. Also,scrummage(for defs. 1, 3).