词源同cone, cuneiform(楔形). 来自PIE*ak, 尖，刺，见acid, acumen. 最早指铸造货币的楔形模子，后指铸造的*及创造义。

coin

coin: [14] Latin cuneus meant ‘wedge’ (from it we get cuneiform ‘wedge-shaped script’). It passed into Old French as coing or coin, where it developed a variety of new meanings. Primary amongst these was ‘corner-stone’ or ‘corner’, a sense preserved in English mainly in the now archaic spelling quoin. But also, since the die for stamping out money was often wedge-shaped, or operated in the manner of a wedge, it came to be referred to as a coin, and the term soon came to be transferred to the pieces of money themselves.
=> quoin

coin (n.)

c. 1300, "a wedge," from Old French coing (12c.) "a wedge; stamp; piece of money; corner, angle," from Latin cuneus "a wedge." The die for stamping metal was wedge-shaped, and the English word came to mean "thing stamped, a piece of money" by late 14c. (a sense that already had developed in French). Compare quoin, which split off from this word 16c. Modern French coin is "corner, angle, nook." Coins were first struck in western Asia Minor in 7c. B.C.E.; Greek tradition and Herodotus credit the Lydians with being first to make and use coins of silver and gold.

coin (v.)

"to coin money," mid-14c., from coin (n.). Related: Coined; coining. To coin a phrase is late 16c. A Middle English word for minter was coin-smiter.

1. I pulled a coin from my pocket and flipped it.

我从口袋里掏出一个*，把它弹向空中。

来自柯林斯例句

2. Thirteen per cent of Christie's coin and banknote auction went unsold.

佳士得13%的*和*拍卖流拍。

来自柯林斯例句

3. I put the coin in the machine and pulled the lever.

我把*投入机器，拉动控制杆。

来自柯林斯例句

4. The golden rule is never to clean a valuable coin.

重要的原则是决不清除贵重*上的污垢。

来自柯林斯例句

5. Coin-operated telephones took 100, 200 and 500 lire coins.

投币电话接受100，200和500里拉的*。

来自柯林斯例句