/fol"is/ , n. , pl. folles /fol"eez/ .
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.
[ 1880-85; follis bag, purse ]