masturbation Meaning, Definition & Usage

  1. noun manual stimulation of the genital organs (of yourself or another) for sexual pleasure
    onanism.

WordNet

Mas`tur*ba"tion noun
Etymology
L. masturbatus, p. p. of masturbari to practice onanism: cf. F. masturbation.
Definitions
  1. Onanism; self-pollution.

Webster 1913