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1.
Term given to attractive young women who have very large tempers. These women usually are nymphos and have good intentions. They can become jealous at times and are over-protective of their feminine yet heterosexual boy-toys. They also like to make sandwiches with their boy-toys. They are fun and have a good sense of humor. Sometimes they have a hard time making up their minds, which may annoy you, yet you always find yourself running back to them. Brittni's are rare and precious.
"What's the deal with Frank's bitch?"
"I don't know man. She looks like she may be a brittni."
by Kornelius Johnson November 12, 2007
 
2.
A name given to a badass girl, who can handle her own. Uniquely spelt for a reason, she's one of a kind! She's never slacking! Close to a "boss" but a whole lot better! Put her into a relationship & she's got it down to a t. Kisses so divine & lips like wine! She a dime. Precious & rare! You'd be a fool to not want this badass!
Damn bro, check out brittni
by bee_emm1492 January 14, 2011
 
3.
The closest to perfect; one who denies seeking help from anyone; very strong, trustworthy, and caring; strong and beautiful.
Wow! Do you see that girl? She's such a Brittni!
by Sellbell July 15, 2014