The Collaborative International Dictionary of English v.0.48:

Coin \Coin\, v. t. [imp. & p. p. Coined (koind); p. pr. & vb.
   n. Coining.]
   1. To make of a definite fineness, and convert into coins, as
      a mass of metal; to mint; to manufacture; as, to coin
      silver dollars; to coin a medal.
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   2. To make or fabricate; to invent; to originate; as, to coin
      a word.
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            Some tale, some new pretense, he daily coined,
            To soothe his sister and delude her mind. --Dryden.
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   3. To acquire rapidly, as money; to make.
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            Tenants cannot coin rent just at quarter day.
                                                  --Locke.
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