We played swingball in the garden, seeing who could make the ball spin around the pole the fastest.

swingball 是一个复合词，由 swing（摇摆、旋转）和 ball（球）组成，指一种户外游戏，玩家用球拍击打连接在中心杆上的球，使其围绕杆旋转。这种游戏也被称为"旋转球"或"绕杆球"。