a bum or someone who doesnt have his shit together.
that guys a bit of a gronk
by phatfrankiefiver April 26, 2003
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Australian slang for a teenage shit kid. Can be applied to adults too.
"that gronk sauron narc'd on a guy for hacking him"

"those AOL gronks are so lame"
by IRoNGRoN December 17, 2004
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British Trainspotter speak for a class 08
diesel electric shunting loco. The BTC commissioned about 1100 of them back in the late 50s and a substantial number are still in traffic.

Gronks are sometimes known as Jockos
1V57 failed just outside Reading and they had to use a Gronk to haul it in out of the way.
by Brucester February 24, 2009
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The Scum of Society. Also known as "Deadbeat"
"He's such a gronk"
by FyouCK October 9, 2009
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Someone who is a complete idiot and trys to be a hard but isnt
Ian says: "bruz im in a graff crew now!"
You: "really? how'd you get in?"
Ian: "well, Im not really in it. They just said if they can use my paint then i can go around with them"
'Man, Ian your such a gronk!'
by illestbillest January 10, 2010
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Ultimately a baby ogre.
An over sized person, clumsy, often fumbles around.

Big boned, short and wide, often with exma or a very red face.
Indication that someone/something is large
"Ughhh you are such a gronk, why are you so massively wide"

"You have gronk feet"
by Princess Of Persia January 13, 2010
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Being that sober guy at a party to creep on drunk, taken girls.
Man did you see Maria last night? She was totally getting gronk'd by Dan.
by AjDurH April 11, 2011
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