COIGN
quoin, coign, coigne
(noun) the keystone of an arch
quoin, coign, coigne
(noun) expandable metal or wooden wedge used by printers to lock up a form within a chase
Source: WordNet® 3.1
Etymology
Noun
coign (plural coigns)
A projecting corner or angle; a cornerstone.
The keystone of an arch.
A wedge used in typesetting.
A a corner of a crystal formed by the intersection of three or more faces at a point (in crystallography)
An original angular elevation of land around which continental growth has taken place (in geology)
Anagrams
• incog
Source: Wiktionary
Coign, n.
Definition: 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’s Unabridged Dictionary 1913 Edition