Lewis Short
collybus | collŭbus (noun M) = κόλλυβος: (), , , = [prob. of Phoenicio-Semitic origin, kindr. with the Heb. , to change]
* The exchange of coins of different kinds, or of different countries, agio.
* Prop., Cic. Att. 12, 6, 1; Cassiod. Parm. ap. Suet. Aug. 4.
* Meton., the rate or premium of exchange, Cic. Verr. 2, 3, 78, § 181.
Charlton T. Lewis, Charles Short, A Latin Dictionary