to wank, masturbate, jack off
I got home and bashed one out
by Don Kiddick May 26, 2004
(Verb) Originating from Yorkshire, this is a slang term for the act of masturbating, or "bashing". To bash one out, means to have a good masturbating session.
Steve left the room mid way through the film to bash one out. I heard him moaning in the next room.
by Samwiez September 27, 2010

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