Related Clues:

• Capital of South Dakota
• River curve
• Road shape, sometimes
• Suffix with heir
• Downhill zigzag
• Curved letter
• Start's start?
• Zigzag in snow
• Start of start
•     Part of Lombard Street in San Francisco
• Superman's letter
• Zigzagging course
• Half of 8?
• It goes this way and that way
• River's curve