Related Clues:

• Salt, so to speak
• Roof goo
• It may go on a drive
• Waterproofing material
• Petroleum residue
• It may hold feathers in place
• It's in the pits
• Do road work?
• Coal byproduct
• Two-lane topper, often
• Chantey chanter
• Work on the road
• What a steamroller steamrolls
• Veteran mariner
• Prepare for feathering