from The American Heritage® Dictionary of the English Language, 4th Edition
- A river of south-central Europe rising in southwest Germany and flowing about 2,848 km (1,770 mi) southeast through Austria, Hungary, Serbia, and Romania to the Black Sea. It has been a major trade route since the Middle Ages.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A river of Europe, which arises in Germany, and flows 2850 km (1775 miles) to the Black Sea in Romania.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the 2nd longest European river (after the Volga); flows from southwestern Germany to the Black Sea
Latin Dānubius, from Proto-Celtic *Danuvios (compare Welsh river name Donwy), from Pre-Celtic *Dāne/ou̯i̯os, from Proto-Indo-European *dhen- (“run, flow”); akin to Latin fōns ("spring"), Persian دنیدن (danīdan, "to hasten, run"), Ossetian дон (don, "water"), Sanskrit धन्वति (dhanvati, "it flows, runs"). (Wiktionary)