Arno(redirected from Arnos)
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Arno,river, c.150 mi (240 km) long, rising in the Northern Apennines, Tuscany, central Italy, and flowing south to Arezzo where it turns northwest; it proceeds generally west, through Florence and Pisa, to empty into the Ligurian Sea. The Arno valley is fertile and densely populated. Its upper valley, the Casentino, is famous for its scenery. In 1966 a great flood on the Arno heavily damaged the art treasures of Florence.
a river in central Italy, rising in the Apennines and flowing through Florence to the Ligurian Sea. Length: about 240 km (150 miles)