What is the meaning of Jerk_off?

To masturbate by manually stimulating one's own penis.

To manually stimulate someone else's penis; to give a hand job.

To do nothing; to waste time.

To deceive.

Used other than figuratively or idiomatically: see jerk, off.

Alternative form of jerkoff (an obnoxious person)

An act of masturbation.

A stunt in which the performer is suddenly pulled off a horse, etc. by means of a cable.

Source: wiktionary.org