masturbate🔊

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.

(colloquial) To manually or by other means than one's own genitals stimulate someone else's genitals sexually.

(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.