Related Clues:

• Swing support, perhaps
• It's stuffed with wood
• Penumbra
• Cherry or chestnut
• Family diagram
• Shoe stretcher
• Cheshire cat's hangout
• Bird house?
• Arboretum specimen
• Shoe saver
• Oxford insert
• See 75-Down
• Parasol's offering
• Conifer
• Palm, e.g.