When a gang or a large number of people beat the living shit out of a smaller group of people (usually 1,2 or 3 people).

*Also see gang bang for similar meaning
Tim got charged with assault again, he and some mates were caught gang bashing some dudes over on West 12th St.
by Fish-o-matic March 28, 2008
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beating someone up with your words
amy georgia and phoebe stood around molly verbally gang bashed her to her death
by therealbarack June 13, 2021
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