manual stimulation of the genital organs ( of yourself or another) for sexual pleasure

Onanism; self- pollution.

Sexual stimulation or gratification of the self.

Self- abuse, the habit or the act of masturbating.

Unnatural production of orgasm, as by the hand, etc.

Self- abuse; onanism.

The last named, cut, torn and bleeding, made a statement to the writer that cannot be put in print; yet she was by her owners accused of masturbation. – Chicago's Black Traffic in White Girls by Jean Turner-Zimmermann

Elsewhere in this book we paid our respects to the rubber diaper, and we wish to reiterate at this time that it is in all probability responsible for a great deal of masturbation. – The Mother and Her Child by William S. Sadler Lena K. Sadler

At the age of ten, Matthew Locke had had the good fortune of discovering masturbation. – Undo-a-Novel-By-Joe-Hutsko by Hutsko, Joe

Relationships of this nature were not acts of adultery any more than masturbation in the shower was adultery with water. – An Apostate: Nawin of Thais by Steven Sills

The time when masturbation does affect the mind of the child is when the mind awakens to the fact that it is allowing an abnormal, unclean, or filthy habit to dominate mind, soul, and body, and then, and usually not until then, does this bad habit begin to cause mental depression and a host of other symptoms that so often accompany masturbation. – The Mother and Her Child by William S. Sadler Lena K. Sadler

That's a complicated process, involving simultaneous male and female masturbation, but the offspring is an exact duplicate of the single parent. – Uller Uprising by Henry Beam Piper, John D. Clark and John F. Carr

And yet he again restrained himself by comparing it to the gloom after masturbation. – Corpus of a Siam Mosquito by Steven Sills