1. also Northern Dvina A river, about 750 km (465 mi) long, of northwest Russia flowing northwest into Dvina Bay, an arm of the White Sea.
2. also Western Dvina A river, about 1,020 km (635 mi) long, rising in western Russia and flowing southwest and northwest through Belarus and Latvia to the Gulf of Riga.
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.