Related Clues:

• Elton John, e.g.
• Elton John or Mick Jagger
• Knight, by definition
• 'Yes, ___!'
• Base address
• Round Table address
• 'Mister!'
• Word said with a salute
• Title for 17-Across
• Respectful title
• What to call a sergeant
• Walter Raleigh, for one
• 'No ___!'
• Gent
• Polite title