Anti-skate is a feature found in some turntables that helps maintain proper tracking of the stylus in the groove of a vinyl record. It counteracts the inward force that pulls the stylus toward the center of the record, which can cause distortion and uneven wear on both the stylus and the record. By adjusting the anti-skate mechanism, users can ensure that the stylus remains stable and accurately follows the grooves. This adjustment is crucial for achieving optimal sound quality and prolonging the life of both the stylus and the record, making it an important aspect of turntable setup.