A term used to describe girls, usually big breasted women who are wearing a bra that is too small for them so it looks like they have four boobs.
I bought a bra the other day and thought it would be good to wear to the club, but i started dancing and noticed I had quadraboob. My nipples were hangin out.
by Les Is More January 09, 2006
When a larger breasted females bra fits incorrectly and the boobs fall out of the bra giving the illusion of four boobs.
by devildriver6969 December 15, 2009
It's what happens when a too small bra is used on a too big boob squeezing two perfectly round boobs into four smaller ones.
by Mydaho May 05, 2007