Related Clues:

• Sailors, slangily
• Blackens, in a way
• Improves, as a road
• Pea jacket wearers
• Hornpipe dancers
• Deck hands
• Covers a lot of ground
• Covers with tar
• Old mariners
• Fills with black gunk
• Paving substances
• Prepares for feathering?
• Blackens the road
• Installs, as a driveway
• Salts