Last seen in:
Related Clues:
- Pipe buildup
- Coke product?
- Smudge on 49-Across's suit
- Dirty coat?
- Residue from burning
- Carbon from burning
- Deposited carbon
- Form of carbon
- Black powder
- Deposit in chimney
- Something stuck down the chimney? Santa out of training for starters!
- Chimney substance
- A pollutant
- Chimney pollutant
- 29-Down buildup