Related Clues:

• Temperature
• Shade of gray
• Pinatubo product
• Silvery-gray
• Barbecue residue
• Firebug's crime
• It may be gone in a flick
• Wood used for tool handles
• Type of tree
• Fire work
• It may be volcanic
• Wave type
• It comes before Wednesday once a year
• Firebug's intent
• Fire proof?