Neathage 

The underside of a woman's brests when she wears a shirt cut up to the bottom of them.

Wow! If that girl wore her shirt and higher, her neathage would be showing her nipples

Neathage by AEron November 7, 2003

neathage 

Whereas, cleavage implies the top view of a woman's breast, "neathage" implies the bottom view. This is usually accomplished by a female wearing a small shirt, or lifting up her shirt so that not only her abdominal is exposed, but also the bottom of her breasts. Neathage is also possible when a girl has a hand bra, covering the nipples but exposing her cleavage and neathage.

See also: under boob

Dude 1: Yo did you see that chick?
Dude 2: You mean the hot one wearing a baby GAP shirt?
Dude 1: Yeah man you could see her neathage!
Dude 2: Hell yeah dude!

neathage by implicit March 28, 2008

nethage

The cleavage seen when a women is wearing a very high cut top. Basically, the tops of the breasts will be covered but from about an inch below the nipples and down will be bare. The word is a portmanteau of "cleavage" and "nether" (meaning under, or below).

Did you see the nethage on that girl back there? She was practically topless!

This shirt has shrunk so much in the wash I'm practically showing off my nethage.

nethage by JoshM May 28, 2006