Learn how to say Cleavages correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word cleavage:
(informal) the separation between a woman’s breasts, esp as revealed by a low-cut dress
a division or split
(of crystals) the act of splitting or the tendency to split along definite planes so as to yield smooth surfaces
Also called: segmentation (embryology) (in animals) the repeated division of a fertilized ovum into a solid ball of cells (a morula), which later becomes hollow (a blastula)
the breaking of a chemical bond in a molecule to give smaller molecules or radicals
(geology) the natural splitting of certain rocks, or minerals such as slates, or micas along the planes of weakness