a money of account of the European Common Market used in international finance, based on the combined prorated values of the currencies of member nations.
Origin: E(uropean) C(urrency) U(nit), perh. with play on écu
old Fr. silver coin, 1704, from O.Fr. escu, from L. scutum "shield" (see hide (n.1)). First issued by Louis IX; so called because the shield of France was imprinted on them.