from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A bronze coin minted during the Roman Empire and Roman Republic, equal to 2 asses.
from The Century Dictionary and Cyclopedia
- n. A Roman bronze coin, of the value of 2 asses (see as), issued by Augustus and some of his successors: popularly called by coin-collectors “second brass,” to distinguish it from the sestertius, the “first brass” Roman coin.
Latin dupondius, literally "two-pounder". (Wiktionary)