To sleep. I'm not sure of how many ways to use it though.
If you were sleeping you wouldn't be "z'ing."
The only way I know how, or have heard anyone use it is in the example.
Slang: I'm going to cop me some z's
Translation: I'm going to get some sleep
by JGuzmannn November 24, 2006
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The most badass letter of the alphabet. No acceptions
1: "What is the best letter ever?"

2: "Z, of course."
by AshleyRules100 May 29, 2010
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The inverted form of A++ (which is a French way of saying "see you later"). As a result, Z-- means "hello".
A Hey!
B Z--! You alright?
A Yes. Yes I am.
B Good. I have to go. A++!
A A++
by Orlandooo June 11, 2008
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To engage in the activity of sleeping. This usually occurs after long periods of strenuous activity and/or sex. However this usually refers to a more deep sleep than that of a light sleeper.
Nigga I be hustlin all day. Fo realz, man I can't wait to hit muh shawty up, do tha dirty dirty and then get muh Z's on.... fo real.
by D-shiz January 30, 2009
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The State of Arizona

Also short for Zona.
Arizona is the only state in the USA to have the letter z.

Homie 1: "We cruzin to the Z on Sunday."

New Mexican: "What you guys doin here?"

AZ Homie: "The Z is here to take ova!"
by Chizhi Worm April 28, 2009
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