the capital of Serbia, in the E part at the confluence of the Danube and Sava Rivers: became the capital of Serbia in 1878, of Yugoslavia in 1929, and later of the State Union of Serbia and Montenegro (2003–2006). Pop: 1 280 639 (2002)
a river in S Europe, flowing N along the part of the border between Serbia and Bosnia and Herzegovina to the Sava River at Belgrade, Serbia. 285 miles (459 km) long.
