Related Clues:

• They're calling in ''Danny Boy''
• Part of a sink
• Tap mishap
• Weapon in Clue
• A drop in the bucket, perhaps
• Unauthorized preview, say
• Native peacemaker
• Spot for a snake
• Pipe blocker
• Assert oneself, with ''up''
• Secrecy breach
• Singing ability, slangily
• Pull the cork on
• Drain pain
• Get blocked up