"cleavage" in the noun sense
1. cleavage
the state of being split or cleft
"there was a cleavage between the liberal and conservative members"
2. cleavage
the breaking of a chemical bond in a molecule resulting in smaller molecules
3. cleavage, segmentation
embryology) the repeated division of a fertilised ovum
4. cleavage
the line formed by a groove between two parts (especially the separation between a woman's breasts)
5. cleavage
the act of cleaving or splitting
Source: WordNet® (An amazing lexical database of English)
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