collўbus

i, m.
I. the exchange of coins of different kinds, or of different countries, agio.
I. Prop., Cic. Att. 12, 6, 1; Cassiod. Parm. ap. Suet. Aug. 4.—
II. Meton., the rate or premium of exchange, Cic. Verr. 2, 3, 78, § 181.
Lewis & Short
A Latin Dictionary, 1879
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