[koin] 
| 1. | a piece of metal stamped and issued by the authority of a government for use as money. |
| 2. | a number of such pieces. |
| 3. | Informal. money; cash: He's got plenty of coin in the bank. |
| 4. | Architecture. quoin (defs. 1, 2). |
| 5. | Archaic. a corner cupboard of the 18th century. |
| 6. | operated by, or containing machines operated by, inserting a coin or coins into a slot: a coin laundry. |
| 7. | to make (coinage) by stamping metal: The mint is coining pennies. |
| 8. | to convert (metal) into coinage: The mint used to coin gold into dollars. |
| 9. | to make; invent; fabricate: to coin an expression. |
| 10. | Metalworking. to shape the surface of (metal) by squeezing between two dies. Compare emboss (def. 3). |
| 11. | British Informal. to counterfeit, esp. to make counterfeit money. |
| 12. | coin money, Informal. to make or gain money rapidly: Those who own stock in that restaurant chain are coining money. |
| 13. | pay someone back in his or her own coin, to reciprocate or behave toward in a like way, esp. inamicably; retaliate: If they persist in teasing you, pay them back in their own coin. |
| 14. | the other side of the coin, the other side, aspect, or point of view; alternative consideration. |
coin
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other side of the coin
The opposite aspect, as in I know you'd like to go, but the other side of the coin is that someone has to stay with the baby or The subscription is expensive, but the other side of the coin is that it's an excellent publication. This term replaced the older other side of the medal or other side of the shield about 1900.