Related Clues:

• Heater component
• Lombard Street feature
• River's path, possibly
• Series opener?
• Test-track curve
• Serpentine curve
• Tee precursor
• Skiing maneuver
• Valuable Scrabble tile
• Snaky letter
• Ogee shape
• Season opener?
• It's twisted
• Tee preceder
• Stamp purchase