[South40]

cleav•age (kl v j)
n.
1. The act of splitting or cleaving.
2. The state of being split or cleft; a fissure or division.
3. Mineralogy. The splitting or tendency to split of a crystallized substance along definite crystalline planes, yielding smooth surfaces.
4. Embryology.
a. The series of mitotic cell divisions that produces a blastula from a fertilized ovum. It is the basis of the multicellularity of complex organisms. Also called segmentation.
b. Any single cell division in such a series.
5. Chemistry. The splitting of a complex molecule, such as a polysaccharide, into simpler molecules.
6. Informal. The hollow between a woman's breasts, especially as revealed by a low neckline.

[katnip]

Don't be fresh now ;-]

[ErnBatavia]

cleav•age

Vroooom!

[Jhoffa_]

5) See "boobs"