Related Clues:
- Road surfacing
- Black liquid
- Sticky substance - seaman
- Dark viscous stuff
- Cigarette residue - old word for sailor
- Product of smoking cigarettes
- Viscous mixture - sailor
- Bituminous substance
- Smoker's black deposit
- Seagoing sort
- Modified pitch
- Roadwork goo
- Dark viscous substance
- Material some roads are made of
- Black roofing gunk