Related Clues:

• Certain peace symbol
• Plumber's concern
• Hookah
• Leak site
• Meerschaum, for one
• Popeye's prop
• Magritte subject
• Meerschaum, e.g.
• Word with water or wind
• Prop for Santa
• Cylinder
• Piece of plumbing
• Drain mechanism
• Word that can follow the end of 18-, 27-, 46- or 61-Across
• It might need a fitting