GROM - Operational Mobile Response Group. Polish special forces.
"GROM candidates were first subjected to a grueling psychological examination meant to search for confident and innovative soldiers as well as those who, though they might be lacking in physical strength, possessed the rare gift of internal iron will."
by soulie January 11, 2004
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a boy in la jolla who is usually: a surfer, an ass hole, greases their hair back, is friends with a or s, drinks beer, chain smokes, attends la jolla high, WSR, hooks up with a girl and never talks to them again, talks shit about everyone, has blond hair, wears flannels
ew i dont want to hang out with the groms, they will rape us and then talk shit about how we sucked dick at sucking dick
by fuckermothercock November 26, 2008
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If that grom snakes me again, I'll wrap his board round his head.
by hairyBumhole September 24, 2003
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To forcefully grasp, seize or colonize a person, thing, or sexual object.
Here is how grom is commonly defined:

Guy 1: " hey watch should we grom for lunch"
Guy 2: " I dunno I'll grom ur ass"

Part 2:
Guy 1: " oh no I ehGROMulated everywhere"
Lady: "ah crap"
by Poopypoopoo696969 December 19, 2016
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Pussies who hang out at 800 and act tough. They only jump kids 10-1 because in any fair fight they would get their ass beat. They pull up to parties univited even though no one wants them there. Complete fags.
Should we go to that party? No because the groms are prolly gonna crash it and they are all fags.
by Sebi Basti Feunede May 6, 2019
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Polish special forces which translates to lighting in polish candidates must know 2 different languages and the training of ONE soldier is about 1 Million dollars. The soldier will be also a master in karate and stealth killing.
Grom is a special forces unit
by Macej January 9, 2006
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the noise an oncoming giant's footsteps make.
GROM GROM GROM GROM
“mom what’s that?”
“THE GIANTS HONEY! RUN!"

GROM GROM GROM GROM
GROM GROM GROM
IT WAS YOU WASN'T IT?

GROM GROM
“RUN JIMMY, RUN!”
YOU SHALL PAY WITH YOUR LIFE
“DONT STOP UNTIL YOU CAN’T HEAR THE GROM”
GROM GROM

ITS SNACK TIME
“JIMMY NOOOOO”

*crunching grom noises*
“JIMMYYYYYYYYY"
NOW I SHALL GO BACK TO MY SLUMBER AND IF ANYONE DISTURBS ME THEN THE SAME WILL HAPPEN TO THEM

*mother sobbing in empty field*
GROM GROM GROM GROM grom grom grom grom grom
by anipug May 31, 2014
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