Crossword Genius

River rising in Russia near Smolensk that flows south to the Black Sea (7)

Ross

I believe the answer is:

dnieper

(Another definition for dnieper that I've seen is " European river".)

I've seen this clue in The Mirror.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.