Plural of coigne; corner stones or external angles of a building; also, advantageous positions.
From Old French coigne, derived from Latin cuneus meaning 'wedge.' The word originally meant corner stones but evolved to mean strategic positions.
In architecture, coignes are the fancy stone corners of buildings, but the word also means a position of advantage—like 'a coigne of vantage' is a strategic spot to watch from.
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