Related Clues:

• Common solvent
• It makes quite a bang
• Early anesthetic
• Solvent
• Explosive, informally
• Heavens
• Pre-Novocain stuff
• It's a gas
• Big bang producer
• It's a knockout
• Pre-op inhalant, once
• Big bang maker
• Rocket fuel ingredient, for short
• What a knockout!
• Wild blue yonder