Related Clues:

• Pipe cleaner
• Fruit for a twist
• Bar twist
• Strong cleanser
• Tough cleaner
• Soap ingredient
• Sodium or potassium hydroxide
• Pucker producer
• Gin and tonic twist
• Gimlet flavoring
• Drain cleaner ingredient
• Caustic stuff
• Wedge in a bottleneck?
• Caustic chemical
• Soap-making compound