Related Clues:

• See 11-Down
• Start of a palindrome
• Letter opener
• Military address
• See 8-Down
• 'Thank you, ___!'
• Word for a superior
• Title of respect
• Elton John, e.g.
• Word of politeness
• Elton John or Mick Jagger
• Knight, by definition
• 'Yes, ___!'
• Base address
• Round Table address