Coign

• (n.) A var. spelling of Coin, Quoin, a corner, wedge; -- chiefly used in the phrase coign of vantage, a position advantageous for action or observation.
Found on http://thinkexist.com/dictionary/meaning/coign/

Coign

Coign noun 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...
Found on http://www.encyclo.co.uk/webster/C/106

coign

angle; viewpoint
Found on http://phrontistery.info/c.html
No exact match found