Related Clues:

• Tobacco smoke component
• Roofer's material
• It may be volcanic
• Roofing material
• It comes before Wednesday once a year
• Swabby
• Fire proof?
• Fossil preserver
• Corona's end
• Shade of blonde
• Stuff of bats
• It comes from the hearth
• Surfacing gunk
• Volcanic output
• Contents of a BBQ pit, often