The name for the main, western branch of the River Nile between the Uganda–South Sudan border and its confluence with the Blue Nile at Khartoum.
Definition of White Nile in US English:
White Nile
proper nounˈˌ(h)wīt ˈnīl
The name for the main, western branch of the Nile River that flows between the Uganda–South Sudan border and its confluence with the Blue Nile at Khartoum.