Related Clues:

• Signal after an air raid
• Shapes formed by angled spotlights
• Track shapes, often
• Skylight alternatives
• Racetracks, often
• Some stadium shapes
• Smushed circles
• Derby track shapes
• Cricket field shapes, commonly
• Roller rink shapes
• Shapes for running laps
• 0 0 0
• Velodrome setup
• Stretched circles?
• Ellipses