Answer: donau

AnswerCrossword Clue
DONAUVienna's river, German style
DONAUDanube, in Germany
DONAUThe Danube, in Germany
DONAUWhat the Viennese call their river.
DONAUThe German Danube.
DONAUWien's river
DONAURiver of Wien
DONAUVienna's river, to Austrians
DONAUBlue river, to Germans
DONAUVienna's river, to natives
DONAUVienna's river, to Strauss
DONAU1910 Kentucky Derby winner
DONAUDanube, to Ludwig