Related Clues:

• It may leave its mark on the road
• One-of-a-kind
• It's often served with a lemon wedge
• Being the only one
• Road gripper
• Opposite of baldness
• Loafer's bottom
• Unduplicated
• See 16 Across
• Type of proprietor
• Flat fish
• Type of fish
• Sneaker surface
• Low part of a high top
• Dover dish