1. Plural of ecu; former French coins or monetary units.
Usage: historical; plural form
2. Plural of ecu; shields or heraldic emblems, especially in French heraldry.
Usage: heraldry; plural form

Examples

• The museum displayed a collection of old French ecus from the 17th century.
• Medieval knights carried ecus bearing their family crests into battle.
• Collectors value rare ecus for their historical significance.
• The heraldic ecus on the castle walls represented the noble families of the region.
• Before the euro, France used ecus as part of its monetary system.