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."
A 9mm handgun
i shot him twice with my nine
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
Street name for 9mm pistol.
I capped Ewok wit my nines.
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!
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"
the number after eight and before ten in the americal numeral system
anyone who uses "nine" as in the 9mm pistol is a fucker, and is 9 times as wrong as if they were a taker.