Yandex Dictionaries

slovari.yandex.ru

The new Yandex Dictionaries website is the result of merging Yandex Lingvo with Yandex Encyclopedias.

Paper dictionaries are going to die out any day now

So we got a great reference service that elucidates the meaning of words by looking them up in a variety of encyclopedias and dictionaries and simultaneously searches for their equivalents in all major European languages. And vice versa: besides getting words translated from English, German, French, Italian or Spanish into Russian, you can proceed to finding out what these words denote.