[mas.tur.ba.tion] n (1766): erotic stimulation esp. of one's own genital organs commonly resulting in orgasm and achieved by manual or other bodily contact exclusive of sexual intercourse, by instrumental manipulation, occas. by sexual fantasies, or by various combinations of these agencies
MASTURBATION
Meaning of MASTURBATION in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012