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1.
Noun; puke used as a ballistic weapon.

The tomahawk once used by native Americans as a charming throwing axe and scalping tool, lost popularity over the years since fire-arms became cheap and accessible. They have recently made a comeback due to their presence in "Call of Duty" where fanatics delight in making unlikely kills by tossing them huge distances, but only in the virtual world. Actual tomahawks carry hefty punishments if used to attack someone. The Vomahawk is the modern and much less lethal equivalent projectile, composed of regurgitated matter rather than wood and flint.
You come near my house and I'm gonna wet your neck with a vomahawk.
by Effsix July 22, 2011