Someone who is a dero and nobody really likes.
Loser, idiot, fool, dero.
Marley: "ah im so drunk, you wanna fucking punch on bitch?"

Me: "fuck off you gronk"

dero loser jerk idiot wanker
by Cyeahboii. November 23, 2009
someone who thinks they are better than they actually are and act like kingshit and usually bad looking
Guy 1(Matt Dowley): So whats up, wanna get naughty? ;)
Girl 1:(regular chic) NO! You are Gronk I wouldnt do anything with you
Guy 1: But im perfect, long, wide everything a girl you want
Girl 1: Bull, your gronk..
by OMGALECBERNII ^-^ December 11, 2010
The Scum of Society. Also known as "Deadbeat"
"He's such a gronk"
by FyouCK October 08, 2009
a total loser. Usually slumped in posture, with varying shades of colour in their hair. can be seen anywhere and a gronk detector is not needed to find one
"dude look at that total lurking gronk down on the corner!"
by dylmeister007 April 26, 2009
The sound that symbolises true Metal music and everything associated to said music. Often used in conjunction with the Devil horns \m/ at a concert.
Slayer: (Plays "Angel of Death")
John: GRONK! throws the goat
by Thunder Goat March 29, 2010
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
A dinosaur utterance as found in Johnny Hart's syndicated comic, B.C.
Cell 1: The Apteryx is standing in front of The Dinosaur. The word bubble over The Apteryx reads, "I am The Apteryx, a wingless bird with hairy feathers."
Cell 2: The word bubble over dinosaur reads, "Gronk".
by winilula January 16, 2009

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