Related Clues:

• "The Star-Spangled Banner" author
• Test-grading aid
• Latch follower
• A-flat, e.g
• Shutter shutter
• Lock unlocker
• Door fastening
• A cipher needs one
• Trunk hardware
• Under lock and __
• Farm door fastener
• E or G, e.g
• Part of lock discovered in Omaha speedboat
• It has all the answers
• Good thing to sing in