Related Clues:

• Novel thought
• Principal part
• Nub
• Lightbulb, in comics
• Pavarotti or Domingo
• Main idea
• Revelation
• 'Any ___?'
• General drift
• It's a thought
• It may be bright or novel
• Conceit
• Inventor's starting point
• ''Why, the very ---!''
• Doo-wop group member