Related Clues:

• Almond, e.g.
• Bolt attachment
• Acorn, e.g.
• Maniac
• Filbert, for one
• Pecan or cashew
• Hexagonal holder
• Loony tune
• Bar morsel
• Squirrel food
• Wrench's target
• Odd character
• Cashew or filbert
• Diehard fan
• Wackjob