The Collaborative International Dictionary of English v.0.48:
Coin \Coin\, v. t. [imp. & p. p. Coined (koind); p. pr. & vb.
1. To make of a definite fineness, and convert into coins, as
a mass of metal; to mint; to manufacture; as, to coin
silver dollars; to coin a medal.
2. To make or fabricate; to invent; to originate; as, to coin
Some tale, some new pretense, he daily coined,
To soothe his sister and delude her mind. --Dryden.
3. To acquire rapidly, as money; to make.
Tenants cannot coin rent just at quarter day.