Related Clues:

• Half a McDonald's logo
• Sneaker surface
• Dramatic entryway
• Instep, e.g.
• Supporting structure
• Span
• Foot shape
• St. Louis' Gateway, e.g.
• Staircase component
• Lead-in for enemy
• Classy entrance
• Bald tire's lack
• Tire surface
• Nemesis or conservative preceder
• Bridge or foot feature