Lemon or sulphur, eg (6)

I believe the answer is:

yellow

(Other definitions for yellow that I've seen before include "Jaundiced - yolk" , "Cowardly (colloq.)" , "Part of egg" , "Colour of cowardice, custard" , "likely to run" .)

I've seen this clue in The 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.