/'kɔɪnɪdʒ; `kɔɪnɪdʒ/
n
1 [U]
(a) making coins 造硬币.
(b) coins made 所造的硬币.
2 [U] system of coins in use （现行的）硬币币制
*decimal coinage 十进位硬币币制.
3 (a) [U] inventing of a new word or phrase 创造新词语.
(b) [C] newly invented word or phrase 新创的词语
*I haven't heard that expression before is it a recent coinage? 我以前从未听到过这个词语--是最近新造的吗?

n
[U]
the system or type of money used in a country
　the gold coinage of the Roman empire
[C]
a word or phrase that has been recently invented
　The phrase 'glass ceiling' is a fairly recent coinage.
[U]
the invention of new words or phrases
[U]
the making of coins