Nickel, e.g. (4)

I believe the answer is:

coin

(Other definitions for coin that I've seen before include "Metal used as money" , "Money; devise (a word)" , "Invent a word or phrase - for money?" , "Metal currency" , "Invent (a new phrase)" .)

I've seen this clue in the USA Today, The Washington Post, the Ink Well xwords and the King Feature Syndicate.

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