calvage defines the roundness of a man's calves due to muscular definition. akin to the word "cleavage," the play on words for calves then becomes cleavage.
The mirror opposite of cleavage. The appearance of completely no cleavage at all. In fact there is almost a slight depression where the breasts should be.
BIll: "YO that chick has some small tits man!"
Armando: "Nah yo that's some CAVAGE!"