1Golf
The action or practice of using excessive backswing or follow-through when swinging the club; an instance of this.

2Gymnastics
A movement in which the body swings or turns over.

3Generally. The action or an act of swinging too far. Also in extended use: an excessive reversal or correction; an overreaction.

(chiefly Golf and Baseball). To swing too hard when hitting a ball, employing excessive backswing or follow-through.