Answer: soot

AnswerCrossword Clue
SOOTChimney sweep's target
SOOTSanta sullier
SOOTSanta's laundry problem
SOOTDark powder
SOOTChimney sweepings
SOOTLampblack source
SOOTMessy buildup
SOOTChimney buildup
SOOTChimney residue
SOOTConcern for Santa
SOOTBlack buildup
SOOTFlue residue
SOOTSpot for Santa
SOOTChimney collection
SOOTSanta soiler
SOOTSanta's coat?
SOOTSpot for Santa?
SOOTComponent of Japanese sumi ink
SOOTFlue coat
SOOTSweep's target, perhaps
sootto cover with a residue of burning
SOOTFurnace film
SOOTChimney stuff
SOOTSweep's target
SOOTFlue build-up
SOOTIt's found in a stack
SOOTCarbon particles
SOOTChimney coating
SOOTFlue problem
SOOTWhat a chimney sweep sweeps
SOOTLampblack
SOOTChimney fallout
SOOTPowdery pollutant
SOOTChimney schmutz
SOOTGrime
SOOTChimney sweep's sweepings
SOOTNorth Pole laundry problem
SOOTFilm in a flue
SOOTSanta-suit stain
SOOTFlue powder