#1 cleavage n. the state of being split or cleft; "there was a cleavage between the liberal and conservative members". wn
#2 cleavage n. the breaking of a chemical bond in a molecule resulting in smaller molecules. wn
#3 cleavage n. [segmentation] (embryology) the repeated division of a fertilised ovum. wn
#4 cleavage n. the line formed by a groove between two parts (especially the separation between a woman's breasts). wn
#5 cleavage n. the act of cleaving or splitting. wn
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