Various dictionaries of the Indo-European languages can be found here.
The Indo-European languages is one of the World's primary language families. The Multi Linguis Project includes translations from such the Indo-European languages as Armenian, Bokmål Norwegian, Bulgarian, Czech, Dutch, French, German, Greek, Hindi, Italian, Persian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Urdu and many others.
See more information about these languages inside the books offered below or on Wikipedia and follow the explanatory links. There you can learn about their history, phonology, grammar, vocabulary and more on.
These dictionaries contain several languages in a book.
All the Indo-European languages presented in the project can be found here.