A badass little bike that cant do anything a big bike can. Except better!! Is just as fun and cost less. Gets pussy and will teach you that the streets are real.
Random stranger in public : Thats a badass little bike what is that?

Grom stunter : Its a grom.... Braaaapppp!
by Chicopmr October 07, 2017
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Someone that tries super hard to be cool but really is just a fake wanna-be that totally annoys you.
Man that Whitney dude is such a grom, he pissed all over himself after drinking a few Twisted Tea's. I bet he drops grommer's all the time in bars.
by Dr. Gromster, M.D. November 11, 2009
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The grimmest of the grim.
'Sweet jesus, did you just do a shit on my floor?! Dude, that is GROM!!!'
by Mr. Fisherman Beard April 14, 2013
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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 08, 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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a wanna be scene kid according to the chavs and sluts but to the 'groms' a new generation below scene kids
'omg your so grommy'

'lolz k behbz'
by perksyy August 18, 2011
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Hilariously mangled spelling of "Gorn", the large reptilian alien from the Star Trek television series.

Gorn was first misspelled as "Gorm" in various forum and email messages, which was later further mangled into "Grom".

Fun Fact: Groms is generally considered to be the singular of Groms.
Why'd you choose the Groms?" "Oh, you know, beacuase I like scaley lizards
by GromGromGrom May 26, 2011
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