Challenges for dry cleaners (6)

I believe the answer is:

stains

(Other definitions for stains that I've seen before include "Discolorations or blemishes" , "Black marks for saints" , "Sullies" , "Dirty marks" , "Discolours or dyes wood" .)

I've seen this clue in the Wall Street Journal and 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.