Coin1, n.
n. [Fr. coin, wedge, stamp, corner, from Lat. cuneus, wedge; Pr. cunh, conh, cong, wedge, die for striking money, It. conio, Sp. cuño, cuña, Pg. cunho, cunha. The word, when applied to a wedging stone, in masonry, is sometimes written quoin.]
Sense 1. A corner or external angle; a jutting point, as of a wall. See COIGNE.
Sense 2. A wedge for raising, lowering, fastening, or leveling any thing, as a cannon or a printer’s form.
Sense 3. A piece of metal on which certain characters are stamped, making it legally current as money.
It was alleged that it [a subsidy] exceeded all the current coin of the realm. Hallam.
Sense 4. That which serves for payment or recompense.
The loss of present advantage to flesh and blood is repaid in a nobler coin. Hammond.
Rustic coins, stones jutting from a wall, for new buildings to be joined to. Bailey.