Related Clues:
- Apartment security feature
- It lets you see who's calling
- Apartment door feature
- Opening used before opening a door
- Hotel room door feature
- Through which to look without being seen
- Small aperture in a door for instance
- Through which voyeurs look
- Aperture through which glances sneaked
- Way to see through a door
- Small aperture through which to ogle
- Means to spy on people he betrayed
- The viewer's rightful place
- Finding squeak, fix small security device
- Squint to look at dungeon