An oz of any drug although usually pertaining to marijuana. Note: A Z unit containes 28 G units.
"yo how much is it for a z unit?"

"whattup homie can I cop a Z unit?"
by wza August 05, 2005
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a group of individuals that follow the code of "self betterment through the downfall of others"
wow, there goes the Z-unit!
by dick potato October 02, 2003
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A congregation of men or women who are fuelled by the capitalist concept of survival for only the strongest and subsequently act in ways to succeed through all means, illegal or otherwise. They accept no insult and are always handy with a weapon.
The half-assed gangstas tried to strike a deal with Billy, not knowing that they were trying to muscle the most fearful member of the Z-unit.
by HabitualDamnation February 18, 2004
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People who excercise their god-given right to be hostile.
Z-Unit is in da hood! D'arbyJ can suck Moose's dick!
by Ender January 18, 2004
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