What does "jack off" mean?

Nonstandard spelling of jackoff (“a jerkoff”).

What is a synonym for "jack off"?

Common synonyms include: fuck off, jerk off, masturbate, she-bop, wank.

noun, verb, slang

noun, verb, slang ·Moderate ·College level

Noun

1
Nonstandard spelling of jackoff (“a jerkoff”). Canada, US, alt-of, nonstandard

Verb

1
To masturbate. Canada, US, ambitransitive, derogatory, reflexive, slang, vulgar
"Two boys jacking off under railroad bridge. The train shakes through their bodies, ejaculates them, fades with distant whistle."
2
get sexual gratification through self-stimulation wordnet
3
To stimulate or please oneself in an unproductive or idle way. Canada, US, derogatory, slang, vulgar

"Two boys jacking off under railroad bridge. The train shakes through their bodies, ejaculates them, fades with distant whistle."