dop·pia \ˈdäpēə, ˈdȯp-, ˈdōp-, It ˈdȯppyä\noun (-s) Etymology: Italian, from feminine of doppio double, from Latin duplus — more at double : any one of several old gold coins of Italian states constituting the double of some unit (as the sequin or scudo); also: a unit of value equal to a doppia coin < an 8-doppia coin > < 1/4-doppia coin >