A motion of the body by a player as if to make an object already propelled go in the desired direction WordNet 3.0 & Open English WordNet

A body motion made to coax an object already propelled go in a desired direction. For example, a nervous leaning or twisting movement while playing sports such as golf or bowling, to "persuade" the ball to go in a desired direction. Also applies to various riding sports, such as motorcycling or surfing. Wiktionary