1Metal currency, as opposed to paper money; a coin.
自動販売機に硬貨を入れて飲み物を買った。
I put coins into the vending machine and bought a drink.
財布の中の硬貨を数えたら、ちょうど千円あった。
When I counted the coins in my wallet, there was exactly 1,000 yen.
記念硬貨はコレクターの間で人気がある。
Commemorative coins are popular among collectors.
この募金箱には硬貨しか入れられません。
You can only put coins in this donation box.
2In economics, a stable currency that is easily exchangeable for gold or foreign currency; hard currency.
ドルは世界で最も信頼される硬貨の一つとされる。
The dollar is considered one of the most trusted hard currencies in the world.
その国は硬貨不足に悩まされ、貿易が滞った。
That country suffered from a shortage of hard currency, which stalled trade.