Conversation so far:
where does the blue nile and white nile meet
The Nile River's main tributaries—the White Nile and the Blue Nile—meet in Khartoum, Sudan.
Does the confluence of the White and Blue Nile have a name?
The location where the two Niles meet is known as al-Mogran or al-Muqran.

Question: What is the meaning of the city name?
Self-contained rewrite: What is the meaning of the city name Khartoum?