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Noun; A Giant among men. A Boss. International Player. Savage. Visionary.

Fact: Most children named Brien are extremely talented and 42% have genius IQ's before they have puberty.
"Bruh, props for closing that 6 billion dollar deal! You Brien'd up on that real proper cuhz"
by TheFactsYo February 14, 2017
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The gaelic spelling of Brian. Most commonly given when the person is going to be short in stature and confused with leprechauns. People with this name often have other Irish nicknames such as Murph. Typically they make fun of everyone to make up for their shortcomings. Usually a person with this name follows a career path in sales or gay porn.
Is that a leprechaun?? No, it's Brien and he looks angry for no apparent reason.
by Lurch2219 February 05, 2010
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