Related Clues:

• Hackberry relative
• Classic street liner
• Cigarette detritus
• Vesuvius debris
• Baseball-bat wood
• Acorn in 2057
• Stomped-out cig leftovers
• Wood for bats
• Common street or tree
• Fireplace waste
• Dutch -- disease
• Desk wood
• New Haven's arboreous nickname, "___ City"
• Volcanic stuff
• Tree of life, in Norse myth