Top Definition
an 03xx(infantry man) in the U.S. Marine Corps, that has spent his entire career filling administrative billets.For this reason a poGrunt will stay as motivated as the day he left SOI ( school of Infantry )....... this Marine will be the one, who instead of saying go do something productive..... will be like " hey Marines log run(eventhough its black flag and there should be no pt'ing going on )
Ie: bro, were you there when that poGrunt Sgt. put me on suicide watch because i was playing with a plastic bag.
by squacker mc. squackin berg May 09, 2011

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