A nickname for a senior ranking non-commissioned officer in the United States Marine Corps with the pay-grade of E7 and the rank of Gunnery Sergeant. This nickname's usage, often used as a term of respect, is determined by the GSgt.
LCorporal: Hey, gunny?
GSgt: Yeah?
LCorporal: Pyle took a **** in the M998. AGAIN!
GSgt: Picks up Kabar knife
by Macd00d January 10, 2006
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Short name for Gunnery Sergeant. A Gunnery Sergeant is one rank higher than Staff Sergeant and better at everything a Staff Sergeant could do.
Gunny Tom Highway (of "Heartbreak Ridge"): "This is the AK-47 assault rifle, the preferred weapon of your enemy."
S-4 SSgt : "Oh, I didn't know that."
by JayJayEm August 06, 2006
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Gunnery Sergeant in the Marine Corps. Usually the boss of the Marines that are associated with him/her.
Gunny Hipe is gonna chew my ass for being late!
by Jerrelle January 11, 2008
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" a word used to describe someone who is tired and is unable to hit the "f" key... and lazily hits the "g" key instead. means "tiredly funny"
by EDWARRRD February 13, 2009
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Getting a terribly good deal on something through use of persuasion and guilt.
Bryce: "Damn did you guys see Boone's new 2011 Nissan Juke his mom got for him?"

Kevin: "Yeah dude I'm pretty bummed, such a fucking Gunny."

Boone: "Guys cmon I personally think I really deserved it!"
by KmRoth June 16, 2011
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