Related Clues:

• A silent butler may hold it
• Camel dropping?
• Fire residue
• Efflux from Etna
• Word with blonde or Wednesday
• Pelée spew
• Igneous rock former
• Cinder
• Slow flow
• Tree whose winged seeds look like tiny canoe paddles
• Igneous rock source
• Gray tone
• Can opener?
• Pompeii was covered in it
• Volcanic effluent