Coin″age (?), n. [From Coin, v. t., cf. Cuinage.] 1. The act or process of converting metal into money.
The care of the coinage was committed to the inferior magistrates.
Arbuthnot.
2. Coins; the aggregate coin of a time or place.
3. The cost or expense of coining money.
4. The act or process of fabricating or inventing; formation; fabrication; that which is fabricated or forged. “Unnecessary coinage... of words.” Dryden.
This is the very coinage of your brain.
Shak.