From Longman Dictionary of Contemporary Englishmasturbatemas‧tur‧bate /ˈmæstəbeɪt $ -tər-/ verb [intransitive, transitive] SYto give yourself or another person sexual pleasure by touching or rubbing the sexual organs —masturbation /ˌmæstəˈbeɪʃən $ -tər-/ noun [uncountable]→ See Verb tableOrigin masturbate (1800-1900) Latin past participle of masturbari
