Related Clues:

• Crucial arch-stone
• Device for lock
• Opener of vital performance
• Item often kept on a chain
• F minor, e.g
• B-flat or C-sharp
• B-flat, for one
• Item on a custodian's ring
• __ lime pie
• West in Florida?
• Cipher creator's need
• 'The Star-Spangled Banner' writer
• Basketball court area
• Small coral island
• Grader's aid