follis [fol-is] Word Origin noun, plural fol·les [fol-eez] /ˈfɒl iz/.
- a bag of copper or bronze coins with a fixed weight, used as money of account in the later Roman Empire.
- a silver-plated copper coin of ancient Rome, first issued by Diocletian.
- a copper coin of the Eastern Roman Empire, a.d. c500.
Origin of follis 1880–85; Late Latin; compare Latin follis bag, purse