ECU

[ey-koo or, sometimes, ee-see-yoo] /eɪˈku or, sometimes, ˈiˈsiˈyu/

noun
1.
a former money of account of the European Common Market that was used in international finance until the was adopted and was based on the combined prorated values of the currencies of member nations.
[ey-kyoo; French ey-ky] /eɪˈkyu; French eɪˈkü/
noun, plural écus
[ey-kyooz; French ey-ky] /eɪˈkyuz; French eɪˈkü/ (Show IPA)
1.
the shield carried by a mounted man-at-arms in the Middle Ages.
2.
any of various gold and silver coins of France, issued from the 13th through the 18th centuries, bearing the figure of a shield.
1.
English Church Union.
/ˈeɪkjuː; sometimes ˈiːˈsiːˈjuː/
noun acronym
1.
European Currency Unit: a former unit of currency based on the composite value of several different currencies in the European Union and functioning as both the reserve asset and the accounting unit of the European Monetary System; replaced by the euro in 1999
/eɪˈkjuː; French eky/
noun
1.
any of various former French gold or silver coins
2.
a small shield
n.

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.
1.
emergency care unit
2.
European currency unit
3.
extreme close-up