Meaning of follis

fol•lis

Pronunciation: (fol'is), [key]
— pl. fol•les
  1. a bag of copper or bronze coins with a fixed weight, used as money of account in the later Roman Empire.
  2. a silver-plated copper coin of ancient Rome, first issued by Diocletian.
  3. a copper coin of the Eastern Roman Empire, a.d. c500.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.