Related Clues:

• It might need a fitting
• Things go down it
• Meerschaum or brier
• Sherlock trademark
• Sink attachment
• Middle of a sink
• Church organ features
• Appurtenance for Santa
• Plumber's duct
• Intelligence concern
• King Cole's request
• Choke up
• Sink outlet
• Shower feature
• Hookah, e.g.