Crossword Genius

Crescent shape, in geometry (4)

Ross

I believe the answer is:

lune

(Other definitions for lune that I've seen before include "River in Lancaster" , "English river" .)

I've seen this clue in The Wall Street Journal.
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.