gronk 

the last turn on a bolt or nut, so as to insure it will not come loose.

Noun: Okay, make sure you give those lug nuts a good gronk.

Verb: Gronk on those bolts so they don't vibrate loose.

gronk by teacherdude32 August 4, 2009

gronk 

an australian term or defininition meaning best friends, lets help each other out anytime, all the time, bros before hoes kinda shieet, not many ppl know this meaning, cos its special like-ED, and its cooler than most ppl think, no need for special handshakes, or slaps, its a seventh sense, cos seven is lucky like that! u know ur there for each other, esp trying to get him/her a gf/bf, u do what it takes, its like playing for the championship. gronk is the new word, should only be used sparingly, and on very rare special once in a lifetime friendships.

yo mooks, were such gronks aye bro, cant believe you took me to churros today, u the fkn best!, all good bro, cos im sik kent, maybe u can put a good word in for to ur cuz u gronk!
leese: no worries bro ill tell her ur sucha nice kent, and thats why were full time gronks!

gronk by mooks69er November 13, 2011

gronk 

A guy that lets anyone and everyone bend him over and use him as their "girlfriend" in prison

Dave: "Fuck I'm horney. Wish I wasn't in prison. I NEED a woman!"
Joe: "No problem mate, just fuck Andy...he's a gronk."

gronk by noneXistant August 19, 2006

gronk 

Someone that is a shithead, they are worse than a Noob

Daniel can get much better because hes from Redfern and hes a gronk.

gronk by Nikkiiscooooool February 15, 2009

gronk 

the kid that always wore the number 55 on your grade school basketball team cause he was an obscenely large bastard.

look at that gronk making all the turnovers, someone should put him on a diet.

gronk by asianfetuskiller May 19, 2008

Gronk 

a drunk gone wrong.

A gronk is a man who misbehaves badly, when intoxicated.
Gronk a coal miner with a meanstreak.

Gronk by wastar April 5, 2009

gronk 

An idiot who rocks himself or loses an argument that was fought whole-heartedly until the poor gronk comes to realisation of his or her assiness and shuts the fuck up.

The gronks live among us, living like the rest of us, in complete satisfaction. They don't even know they're gronks.

gronk by Bastardized Bottomburp June 23, 2003