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A bro, brah, brotha, brother, or any sort of good male friend
Stop by later, we'll hang with my breens and shit, brah.
by stash briggins March 22, 2009
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2
A color (invented by Heffer from Rocko's modern life) that is a mixture of brown and green that dries into a sort of purple.
1."my house is Breen."
2."Harry potter sucks."
by annoymoose December 10, 2003
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4
An almighty hangover with no recolection of how it was acquired. From acronym; breen - Beer Related Event Eliminating Neurons.

1. "the events of the previous night were breened by alcohol"
2. "last night breened all hope of functioning the next day"
3. "too much beer breens as sure as night follows day"
4. "he/she is recovering from a breening. It could take days"
5. "beer is responsible for his/her breened state"
by Raybies August 18, 2007
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5
A species that is not to be trusted in the fictional Star Trek Universe. They wear a mask and shoot green energy weapons.
by Metalorg January 24, 2012
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6
Breen is a word that can substitute any word in the english language.
Shut up or I'll punch you right in the breen!
I have to study for the breen.
Breen breen, breen breenish breen breenson.
by Drunken Fury June 05, 2007
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7
To attack a large pile of papers or a messy desk ruthlessly, especially filing. Can also be applied to tidying of an apartment or house.
I breened my desk earlier and it's a lot tidier now.
by Joeyizzy August 22, 2007
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