Related Clues:

• Flattened circle
• With 54-Down, in reserve
• Like a rugby ball
• Egg shape
• In place
• Courageous
• Shape of Earth's orbit
• Zero, e.g.
• Racing circuit
• Like one White House office
• Not quite a circle
• Lionel train layout, maybe
• Cartouche's shape
• Put in place
• Elliptical shape