Related Clues:

• Battery contents
• Causing one to pucker
• With 44-Across, polluted precipitation
• Word with rock, rain or test
• Caustic liquid
• Limelike
• Certain raspberry pastry
• Ill-natured
• Etching fluid
• Trip agent?
• One litmus test conclusion
• Like limes
• Caustic compound
• Hydrofluoric ___
• Tongue-curling