Related Clues:

• Small seed
• Shell kernel
• Difficult problem
• Snack for a blue jay
• Potential tree
• Future part of a stand, maybe
• Wrench target
• Find under an oak
• Brazil, e.g.
• Oak, in a nutshell
• Aficionado, informally
• Giant fan
• Bonbon center
• One fell on Chicken Little's head
• Bolt connector