Onanism
131masturbation — n self gratification, self manipulation, autoerotism, manustupration, onanism; self abuse, self defilement, Sl. playing with oneself …
132self-abuse — n 1. self reproach, self reproof, self chastisement, self condemnation. 2. masturbation, self gratification, self manipulation, self stimulation, autoeroticism, manustrupra tion, onanism, self defilement, Sl. playing with oneself …