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21.
The nines is the worlds longest running conspiracy theory, that has roots in Europe, Africa, and Asia and inspired studies like Astrology and Numerology. The theory is that every thing is based on mathematics, stating that mathematics would be the only logical universal language. The theory also goes to state that there are only nine different possible personalities and that you can know the future by decoding the messages. It goes even further as to state that the entire fate of the human race can be revealed through numbers. There are nine references and jokes all over the world and have been for thousands of years (Fable 2, The Nines, The Odyssey). The number nine is foreboding sign so if you see one while doing something dangerous then you may not want to attempt it, on the other hand it can also be viewed as a good sign so be wary and precede with caution.
Andrew: "Man I wonder what Phill is up to?"

Josh: "I don't know but I'm seeing "Nines" everywhere."

Dustin: "Maybe we should go see him."

Darrel: "Yeah well maybe we shouldn't."

Everyone: "Call him!"
by 1uck35t4r5 April 13, 2010
 
1.
Not the definition of the "girth" of the barrel, but rather it's bore - the width of the hole that goes through the barrel. Also, not coincidentally, the diameter of the bullet - 9mm.

Refers to a pistol, usually a semi-automatic, ostensibly a 9mm.

Aside: The U.S. Army's standard pistol is a 9mm semi-automatic.
"I was about to pull out my nine and bust a cap."
by Rob Hruska February 06, 2004
 
2.
A 9mm handgun
i shot him twice with my nine
by Anonymous March 23, 2003
 
3.
A firearm, usually a semi-automatic pistol, chambered for the 9x19mm parabellum cartridge.
Glock 17, Glock 18, Glock 19, Beretta 92F, FN Browning Hi-Power
by Spock July 12, 2003
 
4.
Street name for 9mm pistol.
I capped Ewok wit my nines.
by PHIR May 02, 2004
 
5.
A semi-automatic handgun designed to fire cartridges in caliber 9mm Parabellum, aka: 9mm Luger, 9x19 NATO.
Dawgz ain't want'n nun o' mee, cuz muh nine'z got muh back!
by John Dixon January 13, 2004
 
6.
Nickname for girls rated 9 out of 10. The word is typically used by dudes lacking self confidence, and therefore would not deserve "10's"
"Make sure you invite those NINES to the potluck tonight and bring your gamefaces"
by Nipples Gurunt December 12, 2008
 
7.
n. used by punk ass gangstas, means a 9mm pistol, (one would be smart to run ones ass off when hearing this word being used by such types)
Best watch out fo' i whip out my niiine, an' BUST a cap
by Paddy C August 20, 2003