Answer:

mosel

Answer	Crossword Clue
MOSEL	German wine valley
MOSEL	German wine region
MOSEL	River of Deutschland

MOSEL	River in Germany.
MOSEL	German name for French river.
MOSEL	German river.
MOSEL	Playwright Tad
MOSEL	W. German boundary river
MOSEL	A Koblenz river
MOSEL	Metz's river
MOSEL	Pulitzer Prize dramatist Tad

MOSEL	Wine region where Riesling is made
MOSEL	German region known for viticulture
MOSEL	River rising in the Vosges Mountains
MOSEL	German white wine
MOSEL	Koblenz river