Euro just means outside your country. So a Eurodollar is a certificate of deposit in U.S. dollars in some other country (though mainly traded in London). A Euroyen is a CD in yen outside of Japan.
EUROCURRENCY
Meaning of EUROCURRENCY in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012