Related Clues:

• Travel option
• It's dragged to the altar
• Prepare for a contest
• Iron horse
• Apprentices do it
• Mass transit option
• Porch protection
• Bitterly complain
• Wedding dress feature
• Alternative to air
• Fulminate (against)
• Third ___ (track adjunct)
• Pedestrian safety feature
• Billiards cushion
• Commuter line, perhaps