bust off

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bust off (third-person singular simple present busts off, present participle busting off, simple past and past participle busted off or bust off)

1. (transitive, intransitive, slang, African-American Vernacular) To shoot (a gun); to shoot or start a shootout.

   I'm bustin' off my pistol.

   You better be careful, cuz he could bust off anytime.