1. The act, art or practice of stamping money.
2. Coin; money coined; stamped and legitimated metal for a circulating medium.
3. Coins of a particular stamp; as the coinage of George III.
4. The charges or expense of coining money.
5. A making; new production; formation; as the coinage of words.
6. Invention; forgery; fabrication.
This is the very coinage of your brain.