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A person at the lowest level of anything.
We are all just friggin' grunts her at this office.
by Jimmy Staycox August 03, 2003
Term of affection for that tired, filthy, thirsty, hungry, footsore, ripped-trouser, camouflage-painted, lean, mean, son a b*itch who has kept the wolf away from the door for over two hundred years.

US Marines - (03--)
US Army - (11-)
Grunts do it better!

Those fuckin' grunts are cocky.
by Marine Infantry March 07, 2012
A deep manly grunt performed by a lesbian. It is a signal to attract other lesbians to the area. Also used as a signal to alert the other lesbians that a new lesbian is in the perimeter.
A lesbian enters the room and alerts the other lesbians of her presents by excreting a very loud, manly grunt.
by DykeMomma1 April 09, 2009
The little creatures in all of the Halo (X Box) games. They have what looks like cones on their heads and scream various sayings when dying
"Oh man, so many grunts everywhere, I had to use all my grenades and they STILL weren't all dead"

"Those damn grunts, so annoying"
by Bejungles.x October 27, 2009
A front-line soldier.

A grunt is anyone, regardless of rank, who digs his or her own foxhole, performs front-line tasks, handles live weapons and ordnance and duties in combat zone and risks his or her life.

The opposite of grunt is REMF (Rear-Echelon Motherfucker), a desk job military person off the combat zone. If the definition of a grunt is one who digs his own foxhole, a REMF is anyone who sleeps between clean sheets.
To be a grunt in the Marines is the pinnacle of macho image
by Susanna Viljanen March 07, 2008
a member of the marine corps whos MOS is infantry
right now it's all the grunts over in iraq on the front lines.
by SemperFi March 26, 2005
The weakest of the Covenant, also the cutest ^-^
"Little people first!!!!" ~ random Grunt
by Dirge January 30, 2005