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cleavage
This term describes a physical or conceptual separation. In geology and chemistry, it refers to the tendency of crystals to break along specific planes of weakness, creating smooth surfaces. In biology, it denotes the rapid cellular division of an embryo, where a single cell splits into many without increasing in overall size.
Socially and politically, the word evokes a sense of profound alienation or a systemic rift that separates populations into opposing camps. In a fashion context, it refers specifically to the visible gap between breasts, often carrying connotations of allure or modesty depending on the garment.
Meanings
The splitting of a mineral along a definite crystallographic structural plane.
The mica crystal exhibited perfect basal cleavage.
The space or gap between a woman's breasts, typically revealed by a low-cut garment.
The dress had a deep neckline that emphasized her cleavage.
Examples
The geologist examined the cleavage of the mineral sample.
The low-cut dress revealed a hint of cleavage.
A deep social cleavage exists between the two political parties.
The zygote undergoes its first cleavage shortly after fertilization.