Related Clues:

• Stair component
• Chief supporter
• Sneaker-sole surface
• Its gradual loss leads to baldness
• Piece between risers
• -- enemy
• Playfully tricky
• Gateway __ (St. Louis landmark)
• Roman aqueduct support
• Aqueduct feature
• Gateway ___
• St. Louis --
• Make like an angry cat
• Shoe surface
• It gives a tire its grip