Related Clues:
- "The Star-Spangled Banner" writer Francis Scott ___
- Word after "skeleton" or "shift"
- Hinged bit of hardware
- Partner of 53-Down
- Chest unlocker
- Security feature like in Houses of Parliament
- One of 88 on a piano
- Shift or Enter
- Item that might be hidden under a front door mat
- Gate part that rhymes with "clasp"
- Cipher-solving aid
- Super important
- Hinged plate on a door
- Development in cryptography
- Exceptionally important