masturbate
verb uk/ˈmæs.tə.beɪt/ us/ˈmæs.tɚ.beɪt/
[ I ]手淫，自慰 to touch or rub your sexual organs in order to give yourself sexual pleasure
[ T ]对…行手淫 to touch or rub someone's sexual organs in order to give them sexual pleasure
Related words: masturbationmasturbatory