Related Clues:

• Tissue's target
• Up day on Wall Street
• Erstwhile ugly duckling
• Race-winning margin, sometimes
• Scent detector
• Ugly duckling, later on
• Cygnet's parent
• Snoot
• Margin of victory, at times
• Graceful dive
• Tchaikovsky's "--- Lake"
• Classic ballet role
• Word with dive or Lake
• Minuscule margin
• Pen, e.g.