Related Clues:

• Miniscule amount
• Flatfish
• Tiny little bit
• Powerful mite
• Something to smash
• Wee parasite
• Light touch
• Label on the first of two file drawers, maybe
• Lepton's locale
• Thimbleful
• Greek I
• Teeniest Greek letter?
• Physicist's subject
• Small matter?
• Letter before kappa