Related Clues:

• Hardwood
• Chest material
• Refuse
• Hackberry's cousin
• Slippery ___
• Rowan, e.g.
• Volcano detritus
• Common street name
• Hearth residue
• Grateful?
• Flue residue
• Cigarette waste
• Shade tree
• Durable wood
• Grate expectations?