What is the meaning of Masturbator?

Someone who masturbates.

A sex toy used to complement and help stimulate its user's erogenous zone(s) during masturbation, and often designed to simulate an erotic body part (of an imaginary partner).

masturbator, onanist

second/third-person singular future active imperative of masturbor

masturbator (a person who masturbates)

sex toy (especially one intended for solo use)

Source: wiktionary.org