1Stimulate one's genitals with one's hand for sexual pleasure.
- ‘we do not like to admit that we masturbate’
- 1.1with object Stimulate the genitals of (someone) to give them sexual pleasure.
- ‘they masturbated each other in the long grass below the tennis courts’
Mid 19th century from Latin masturbat- ‘masturbated’, from the verb masturbari, of unknown origin.
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