Related Clues:
- What a germ can become
- It may be just a hunch
- Inventor's basis
- What a light bulb may signify
- Mental conception
- Brainstorming contribution
- One may be lost in thought
- Overhead exclamation point, in comics
- "I had no ___!"
- Think-tank product
- "What's the big __ ?"
- "That's the general __"
- Clump up
- Something that comes to mind
- Inventor's inspiration