梨球是一种两人运动，器材部分由一个10英呎（3公尺）固定金属柱，以及一个以绳子挂在其上端的球所构成。比赛时双方站在柱子的两边，并尝试将球打往一个方向（一人顺时针，一人逆时针）。当其中一方顺利将球完整绕在柱子上，比赛便结束。

Tetherball is a North American game for two opposing players. The equipment consists of a stationary metal pole, from which is hung a volleyball from a rope or tether. The two players stand on opposite sides of the pole. Each player tries to hit the ball one way; one clockwise, and one counterclockwise. The game ends when one player manages to wind the ball all the way around the pole so that it is stopped by the rope. It must not bounce.