/ ˈkɔɪnɪdʒ; NAmE / noun
1.
[ U ] the coins used in a particular place or at a particular time; coins of a particular type :
Roman coinage
gold / silver / bronze coinage
2.
[ U ] the system of money used in a particular country :
decimal coinage
3.
[ C , U ] a word or phrase that has been invented recently; the process of inventing a word or phrase :
new coinages
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WORD ORIGIN
late Middle English : from Old French coigniage , from coignier to mint, from Latin cuneus wedge.