Related Clues:

• Amsterdam sight
• One can always find a lock here
• Writer leaves maneater in locked passage
• "Road" in Venice
• Duct — channel
• Waterway for barges
• Planetary feature discovered in astronomic analysis
• Gondola waterway
• Waterway in Birmingham or Bruges
• Anatomical tube-shaped passage
• Amsterdam waterway
• Suez, e.g
• "A man, a plan, a ____, Panama" (famous palindrome)
• Gondola path
• Creation by a locks smith?