n. abbr. Abbreviated form of "cleavage." Often used to distinguish between "good cleave" (in which breasts look full and natural-but better) and "bad cleave" (either aberrations of nature or when breasts look TOO natural. Examples include breasts so pushed together that they spill out of the top, or so loosely held together that the underside of the breast- or boob flap- is visible)
"Hey, nice cleave- you must be wearing that new fancy bra"
"That girl has a nice face but bad cleave. You've got to take better CARE of those things."