Related Clues:

• Curvy letter
• Superman symbol
• It goes this way and that
• Curvy road shape
• Lead-in to the tee?
• Tee's predecessor
• You can't have support without it
• Self starter
• Relative of -trix
• Curved line
• Curvaceous character?
• Driver's challenge
• School commencement?
• Obsolescent suffix
• Road section requiring caution