eur
n. countable B1 Intermediate eur
n. the official currency used by many countries in the European Union. It is the money people use in places like France, Germany, and Spain.
n. the official monetary unit of the eurozone, which consists of several European Union member states. Often represented by the symbol €.
Usage
When used as a currency code in financial contexts, it is often written in all caps (EUR) and remains unchanged in the plural.
Pitfall
The book costs ten euro.The book costs ten euros.In standard English, the currency name follows normal pluralization rules by adding an 's', unlike the convention used on banknotes.