Related Clues:

• Support for some houses
• Oak or elm
• Arborist's focus
• Apple or avocado
• Walnut, but not peanut
• Leaves home? (m)
• Lebanon's flag has one
• Logician's drawing
• 45-Down, for one
• Oak or olive
• Trap, in a way
• Last word of 'The 12 Days of Christmas'
• 28-Across, for one
• Fort locale
• Chart with ancestors