masturbate

Etymology

From Latin masturbārī. Further derivation uncertain; see masturbor for more.

verb

1. (intransitive) To stimulate oneself sexually, especially by use of one’s hand or a sex toy made for this purpose, often to the point of ejaculation or orgasm.
   I'm looking for some hot videos to masturbate to.
   The primary function of a souvenir fetish is so that the offender can relive the actual event within the context of the fantasy, usually while masturbating to maintain sexual arousal and achieve orgasm (Canter et al., 2004). 2006, Catherine Purcell, Bruce A. Arrigo, The Psychology of Lust Murder, page 28
2. (transitive, colloquial) To stimulate someone else sexually without penetration of the penis.
3. (informal, derogatory) To stimulate or please oneself by means of anything, not necessarily sexual, that does not get them anywhere; something that wastes their time; something that does not help others or achieve any important goal.