coign
/kɔɪn/
noun
- 1
A projecting corner or angle; a cornerstone.
- 2
The keystone of an arch.
- 3
A wedge used in typesetting.
- 4
A a corner of a crystal formed by the intersection of three or more faces at a point (in crystallography)
- 5
An original angular elevation of land around which continental growth has taken place (in geology)
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