Teth·er-ball, n. A game played with rackets and a ball suspended by a string from an upright pole, the object of each side being to wrap the string around the pole by striking the ball in a direction opposite to the other.
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  tetherball
       n : a game with two players who use rackets to strike a ball
           that is tethered to the top of a pole; the object is to
           wrap the string around the pole