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1.
v. n. adj. adv. meaning to suck it. Usually accompanied by swift hand motions resembling karate chops to the crotch (the classic suck it hand/body motion).
Ho 1: "Oh em gee, J-Mama, you are such a biotch!"
Ho 2: "Just koom."
by McKoominitt February 03, 2008
 
2.
koom is everything
or
what isnt koom?
when was koom born?
did you go to the koom today?
you have some koom in your eyes.
sara never gave amanda her koom back.
by saradoso July 07, 2006
 
3.
Another way of saying koon which means ass in persian.
A: Woaa look at that koom right there.
D: It's called koon, kooni!
by b3g3 April 23, 2008
 
4.
Australian term for a person of lower intelligence or someone of a suspect sexual orientation.
That guys a complete koom.
by Nemmie April 10, 2005
 
5.
What isn't koom?

Koom is an near undefinable word with a lot of meaning.
That dress looks koomtastic on you!

She was crying today, apparently she had a koom day.
by Saraaaa C. May 03, 2007