Related Clues:

• Soil
• Gravy spot
• Smear
• Dye
• One may be taken to the cleaners
• Besmirch
• Detergent target
• Weatherproofer, e.g.
• It may be under a coat
• Taint
• Blemish
• Laundry challenge
• Get a bad mark on?
• Leak preventer
• Laundry problem