peephole
Visitor viewing port
A peephole is a small hole you look through to see what's on the other side—typically a lens set into a door that lets you see who's there before opening: She checked the peephole before unlocking the door.
The word extends to any small opening that permits viewing while remaining concealed.
Adjustable optical inlet
Light-focusing curved glass
- coverProtect by overlaying
- wide-angleEncompassing broad vistas
- fisheyeHemispherical camera lens
- brassCopper-zinc metal mixture
chrome · installation · door plate · viewer · mounting · one-way · magnification · optical
Actively looking at something
- observingPerceiving attentively
- spyingSecretly observing others
- snoopingSecretly investigating others
- eavesdroppingSecretly listening to others
voyeurism · peeking · reconnaissance · stakeout · covert · clandestine · undercover · infiltration
Lock allowing partial opening
- deadboltKey-operated door lock
- lockMechanism requiring a key
- intercomShort-range voice transmitter
- cameraImage capturing device
identification · verification · safety · protection · precaution · safeguard · checkpoint · monitoring
aperture
Adjustable optical inlet
keyhole · slit · porthole · lens · door viewer · oculus · window
lens
Light-focusing curved glass
- coverProtect by overlaying
- wide-angleEncompassing broad vistas
- fisheyeHemispherical camera lens
brass · chrome · installation · door plate · viewer · mounting · one-way · magnification · optical
watching
Actively looking at something
eavesdropping · voyeurism · peeking · reconnaissance · stakeout · covert · clandestine · undercover · infiltration · shadowing
door chain
Lock allowing partial opening
camera · identification · verification · safety · protection · precaution · safeguard · checkpoint · monitoring · alarm
- exterior fixturesdoorbell, doorknob, door knocker, door handle, mailbox
- fixturesbathtub, bidet, ceiling fan, chandelier, door
- hotel roombed, beds, pillow, sheets, blanket
- protectionbodyguard, armor, gloves, security guard, shield
- building hardwarehinges, locks, latches, knobs, handles
- speakeasysecret bar, hidden door, password, bootleg liquor, bathtub gin
peepholepicture window
Large undivided window
bay window · glass wall · French doors · skylight · porthole
peepholeclosure
Sense of emotional resolution
blank wall · barrier · obstruction · open door · transparency
peepholedisplay window
Storefront glass exhibit area
showcase · storefront · fishbowl · exhibition