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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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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A group of hot girls. They are pretty loud and always drunk
GROM is here, brace yourself"

" I hope GROM comes tonight, they bring the paty"

" GROM, Wow those laidies are fine"
by jjtag October 12, 2008

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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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A group of hot girls. They are pretty loud and always drunk.
"GROM is here, brace yourself"

" I hope GROM comes tonight, they bring the paty"

" GROM, Wow those laidies are fine"
by jjtag October 12, 2008

The Urban Dictionary Mug

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1. The fatty equivelent to Nom. Instead of "Om nom nom," it's "GROM NOM NOM NOM!!"

2. Hungry, starving, ready to chew your own arm off.
1. When my Aunt Sandie talks, all I hear is, "Grom nom nom!"

2. "I'm so hungry!! Grom nom nom!! Food!"
by Lordessakkah August 21, 2008

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A person who tries to be what they are not.

Usually used to refer to someone who attempts to fit their chosen 'fashion group' through dressing, rather than do-ing

see fraudor social chameleon
* Ryan's such a grom man, he dresses 'skater' but doesn't know a truck from a fuckin' tail!

* Ryan is such a grom man, he dresses' emo, but has no emotions!

by LlJones September 19, 2005

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