Related Clues:

• Teeny bit
• Source of nuclear energy
• Slight bit
• 28.35 grams
• Nuclear energy source
• Smallest amount
• Smallest bit
• A sample? What's the sense?
• Took a bite
• Write a bit
• With 60-Across, 1960's TV cartoon hero
• Slightest trace
• Krugerrand measure
• Smashing subject
• Unit of a molecule