Related Clues:

• Curved piece
• Delaware's northern border, e.g.
• A compass can help you make one
• Bit of curvature
• Part of a copyright symbol
• Parabolic path
• Middling exam mark
• Communist leader?
• Ball's path
• It's passable
• Rocket's path, maybe
• Curved segment
• Comet head?
• It's average for students
• Electrical gap filler