masturbation

Từ điển WordNet v3.1 - WordNet Dictionary

noun

manual stimulation of the genital organs (of yourself or another) for sexual pleasure
• Syn:
onanism
• Derivationally related forms:
onanist (for: onanism), masturbate
• Hypernyms:
autoeroticism, autoerotism
• Hyponyms:
self-stimulation, self-abuse, frottage, jacking off, jerking off,
hand job, wank