Related Clues:

• Hardware item
• High school misfit
• Filbert, e.g.
• It's tough to crack
• Acorn, essentially
• Aficionado
• Overly bookish type, stereotypically
• Bookish one
• Bit of hardware
• Inept individual
• Uncool fellow
• Enthusiast plus,
• Squirrel's treat
• Anorak
• Trail mix bit