Related Clues:

• Word with rock, rain or test
• Caustic liquid
• Limelike
• Corrosive substances
• Ill-natured
• Corrosive stuffs
• Etching fluid
• See 14-Down
• Trip agent?
• One litmus test conclusion
• Caustic compound
• Tums' targets
• Hydrofluoric ___
• It's dropped for kicks
• Burn cause