Definitions by Christopher B. S.

concavage 

The result of having no breasts. It appears that your chest is flater than your collar bone.

Damn, her chest is so flat that she's got concavage. Her cleavage is inverted!

concavage by Christopher B. S. April 6, 2005

concavage 

The result of having no breasts. It appears that you chest is flater than you collar bone.

Damn, her chest is so flat that she's got concavage. Her cleavage is inverted!

concavage by Christopher B. S. April 5, 2005