Small, pointy, elongated boobs with soft nipples on women that are not supported or concealed by bras.
Kristen Cavallari's dramatic debut on The Hills was overshadowed by those rat noses that clearly gnawed her bra off.
by VanDammaged June 11, 2009
1 more definition
Smallish, slightly saggy and pointy breasts that, from a side angle, resemble a rat's nose.
I thought she was hot, except once the bra came off, she had some serious ratnose.
by QueenD January 15, 2007