river in central Africa, formed on the N border of Democratic Republic of the Congo by the juncture of the Uele & Bomu rivers & flowing west & south into the Congo River: c. 700 mi (1,127 km)
See Ubangi in American Heritage Dictionary 4
(yo͞o-băngˈgē, o͞o-bängˈ-)
A river of central Africa flowing about 1,126 km (700 mi) along the northwest border of the Democratic Republic of the Congo to the Congo River.