Source : Webster's Revised Unabridged Dictionary (1913)

Franc \Franc\, n. [F., fr. franc a Franc. See {Frank}, a.]
   A silver coin of France, and since 1795 the unit of the
   French monetary system. It has been adopted by Belgium and
   Swizerland. It is equivalent to about nineteen cents, or ten
   pence, and is divided into 100 centimes.

Source : WordNet®

franc
     n : the basic monetary unit in many countries; equal to 100
         centimes