a river of central Italy; flows through Rome to the Tyrrhenian Sea

a river in west-central Italy that flows south to the Mediterranean Sea. Rome is on the Tiber.

The Tiber (Italian Tevere, Latin Tiberis) is the third-longest river in Italy, rising in the Apennine mountains of Tuscany and flowing 406 kilometres (252 miles) through Umbria and Lazio to the Tyrrhenian Sea. It drains a basin estimated at 18,000 km² (6845 square miles). The river has achieved lasting fame as the main watercourse of the city of Rome, founded on its eastern banks.