Rainbow's path (3)

I believe the answer is:

arc

(Other definitions for arc that I've seen before include "Something curved in shape" , "Light" , "Part of a circular line" , "Curvature" , "Part of a curve" .)

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.