Maravedi n. (Numis.) A small copper coin of Spain, equal to three mils American money, less than a farthing sterling. Also, an ancient Spanish gold coin.
... different things; and it was a long while before he got his ships. There was the usual scarcity of money, and the extensive military and diplomatic operations in which the Crown was then engaged absorbed every maravedi that Ferdinand could lay his hands on. There was an army to be maintained under the Pyrenees to keep watch over France; fleets had to be kept patrolling both the Mediterranean and Atlantic seaboards; and there was a whole armada required to convey the princesses ... — Christopher Columbus, Complete • Filson Young