Related Clues:

• Acorn's source
• Hardwood tree
• Sturdy wood
• Cabinet wood
• Furniture material, sometimes
• Cork source
• Bookshelf wood, perhaps
• Hardwood variety
• Flooring wood
• Exemplar of might
• Sturdy building material
• Cask material
• Tree that people carve their initials in
• Bucket material, often
• Squirrel's hangout