coign

1. n. expandable metal or wooden wedge used by printers to lock up a form within a chase Source: wordnet

2. n. the keystone of an arch Source: wordnet

3. A var. spelling of Coin, Quoin, a corner, wedge; -- chiefly used in the phrase coign of vantage, a position advantageous for action or observation. From some shielded nook or coign of vantage. The Century. The lithosphere would be depressed on four faces; . . . the four projecting coigns would stand up as continents. Nature. Source: webster

4. A var. spelling of Coin, Quoin, a corner, wedge; -- chieflyused in the phrase coign of vantage, a position advantageous foraction or observation. Source: adambom

5. n expandable metal or wooden wedge used by printers to lock up a form within a chase n the keystone of an arch Source: ecdict

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