Related Clues:

• Montreal rapid transit system
• Way to commute
• Underground
• One of the phobias
• Lofty beginning?
• Citified, for short
• Subway in Paris
• D.C. underground
• Top: Prefix
• Prefix with "phobia" or "bat"
• One way through Paris
• Way to get around in Paris
• Big-city, briefly
• Paris underground system
• The Paris Underground