by AC STUNNA April 07, 2006
A.B.N means Assholes By Nature, created by the rap artist Trae. A.B.N is featured in many of his songs. A.B.N is not a bad thing to be, when your bitch acts up just go abn on her ass.
by Matt Matt Matt Matt Matt Matt April 09, 2008
Abnormally Bulbous Nipples. A genetic syndrome that can often affect people who are under alot of stress as well. One telltale sign of this obscure occurance is when nipple-lumps can still be seen, despite the wearing of a bra.
ABN makes little more than curious embarassment for most people, but it's a gift from the gods for fashion models.
by Alex Quantashassle August 09, 2005