1
- a flat, typically round piece of metal with an official stamp, used as money硬币。
1.1
- mass noun money in the form of coins钱币：
large amounts of coin and precious metal.
大量钱币和贵重金属。
1.2
coins
one of the suits in some tarot packs, corresponding to pentacles in others某些塔罗纸牌中的一种花色, 相当于其他塔罗纸牌中的五角形花色。
with obj.
1
- make (coins) by stamping metal（冲压金属）制造（硬币）, 铸（币）。
1.1
- make (metal) into coins把（金属）铸成（硬币）。
1.2
- Brit. informal earn a lot of (money) quickly and easily〈英, 非正式〉迅速而轻松地发财：
the company was coining it at the rate of £90 a second.
这个公司正以每秒钟90英镑的速度赢利。
2
- invent or devise (a new word or phrase)创造（新词, 短语）, 杜撰：
he coined the term 'desktop publishing'.
他创造了“桌面出版”这个术语。
短语
the other side of the coin
- the opposite or contrasting aspect of a matter事情的反面。
pay someone back in their own coin
- retaliate by similar behaviour以其人之道, 还治其人之身。
to coin a phrase
1
- said ironically when introducing a banal remark or cliché套用一种说法：
I had to find out the hard way - to coin a phrase.
套句老话说, 我是费了九牛二虎之力才搞清楚的。
1.1
- said when introducing a new expression or a variation on a familiar one［用于引出新的表达方式或旧词的另一种说法］。
词源
Middle English: from Old French coin 'wedge, corner, die', coigner 'to mint', from Latin cuneus 'wedge'. The original sense was 'cornerstone', later 'angle or wedge' （senses now spelled QUOIN）; in late Middle English the term denoted a die for stamping money, or a piece of money produced by such a die.