Crossword Genius

River in Picardy

Ross

I believe the answer is:

somme

(Other definitions for somme that I've seen before include "French 2 down" , "bloody fight" , "French river at Amiens" , "French river, scene of 1916 battles" , "French river known from First World War" .)

I've seen this clue in The New York Times.
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.