Related Clues:

• Self starter?
• Fit for a king
• Curvaceous character
• The first of several?
• Part of a test track
• Slalom track
• Road curve
• Switchback
• Kin of -ess or -trix
• Winding road shape
• Start to sob?
• Tricky curve
• Shape of some hooks
• Start of success?
• Sibilant sound