Related Clues:

• Part of a shoe
• Pursue closely
• End of a loaf
• It's always underfoot
• Spot command
• Part of one's sole
• Order to Rover
• Spot order?
• Sole follower
• It might be said to a dog
• Stiletto, e.g.
• Shoe support
• Order to a dog
• Achilles's weak spot
• Part of a sock