Related Clues:

• A sphere lacks them
• Trims the lawn
• Head start, e.g.
• What trained athletes look for
• Moves crabwise
• Part of a box
• Falling-off point
• Part of a blade
• Polygon part
• Make sharper
• Defeat by a hair
• Good thing to have in competition
• ''Postcards From The ___''
• Sword parts
• Beats (out)