subway /subˈwā/

1. A tunnel for pedestrians
2. An underground passage for water pipes, gas-pipes, sewers, etc
3. An underground railway

• bull pen
• bull pens
• bull point
• bull points
• bull-pup
• bull-pups
• bullring
• bullrings
• bull-roarer
• bull-roarers
• bulls
• bull session
• bull sessions
• bull's-eye
• bull's-eyes
• bull shark
• bull sharks
• bullshit
• bullshits
• bullshitted
• bunded
• Bundesbank
• Bundesrat
• Bundesrath
• Bundestag