noun, plural é·cus [ey-kyooz; French ey-ky] /eɪˈkyuz; French eɪˈkü/.
Origin of écu
Word Origin for écu
n acronym for
old French silver coin, 1704, from French écu, from Old French escu (12c.) "shield, coat of arms," also the name of a coin, from Latin scutum "shield" (see hide (n.1)). First issued by Louis IX (1226-1270); so called because the shield of France was imprinted on them.