Related Clues:

• Vital
• Coral reef
• Major
• Pivotal
• One of 88
• F, G, but not H
• Houlihan's rank
• Student choice
• Hotelier's handout
• 53-Down is one
• Word with organ or sign
• Cryptographer's aid
• He wrote "Defense of Fort M'Henry"
• St. Louis player
• Speck in the ocean