cleavage: []1. Informal The hollow between a woman's breasts, especially as revealed by a low neckline.【非正式用语】 乳沟，胸槽：妇女两乳间的凹陷，尤指低领口展露的部分the visible gap between a woman's breasts. Zero gap preferred, 1/2" is interesting, 3" is boring, 5" is too much.also----------------1. 劈开;开裂[U]2. 裂开的方式[U]3. 裂缝;分裂[C]a sharp cleavage in society between rich and poor贫富之间明显的分裂