A girls version of the word bro. A best friend. Something that is always there for support. Even though they can be a little bit uncomfortable at times, life without them would be very difficult.
a. Bras before boys!
b. Ava... She's my bra. She is so supportive!
by snowtiger5 December 04, 2011
Bad, Rotten Apple
Something described when a person is worse then just a BA (Bad Apple).

If this person is really bad-ass, they will be a B.R.A. or a Bad apple, rotten to the core.
Whoa, that kid just budged in front of everyone in the lunch line.
OMG! He's such a B.R.A.!
by homeroom286forlife April 29, 2010
The article of clothing that females wear that all men want off by any means.
The bra covers the booooobz.
by HEADS GROW BACK May 20, 2016
Female form of bro. It's a way to let another dude, you're not happy with, know he is a complete pussy.
What up bra? What you gonna do about it?

What you lookin' at bra?

That dude is no bra of mine.
by Shawnny March 07, 2015
In Dirac Notation of quantum mechanics, the representation of a state. The complex conjugate of a ket. Denoted as <f| where f can be a wave function or a set of quantum numbers. Analogous to a row vector in linear algebra. The name originates from separating a bracket ( <f|f'> ) into a bra ( <f| ) and a ket ( |f'> ).
<nlm| is a bra representation of the Hydrogen atom with quantum numbers n, l, and m.
by Artin March 01, 2006
a barrier who helps girls not get thier face hit by thier boobs when they are bouncing.
"Hey mum I 'm not going to wear a bra anymore it hurts me"
"tooo bad you need to wear it if youdon't you will look ugly"
by star queen January 24, 2016
1.something a girl wears to keep their boobs from jiggling. 2.an object that has two round circles that support boobs.
hey! should i wear the orange bra? or the yellow one?
by methoal November 13, 2006
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