denarius
de.nar.i.us \di-'nar-e--*s, -'ner-\ \-e--.i-, -e--.e-\ n or de.nar.ii [ME, fr. L - more at DENIER] pl 1: a small silver coin of ancient Rome 2: a gold coin of the Roman Empire equivalent to 25 denarii
Webster's English Dictionaryde.nar.i.us \di-'nar-e--*s, -'ner-\ \-e--.i-, -e--.e-\ n or de.nar.ii [ME, fr. L - more at DENIER] pl 1: a small silver coin of ancient Rome 2: a gold coin of the Roman Empire equivalent to 25 denarii