Liri (lē'rē) [key], river, 98 mi (158 km) long, rising in the Apennines, in Latium, central Italy, and flowing generally SE to the Tyrrhenian Sea. Below its junction with the Rapido River near Cassino it is called the Garigliano. There are hydroelectric stations along its course. In World War II the area around the river was the scene of heavy fighting between Allied and German troops.
