Related Clues:

• Focus (on)
• The El, e.g.
• Crack heads
• Commuter's choice
• Train with gloves
• Exchange barbs
• Wedding trailer
• Fight verbally, perhaps
• Ship's mast
• Amtrak service
• Wabash Cannonball, e.g.
• Clash (with)
• Shadow box
• Exchange words
• Practice fisticuffs