PEEPHOLE
Peephole
A peephole is a small opening through which one may look. In a door, a peephole allows people inside the security of seeing outside without opening the door. Glass peepholes are often fitted with a fisheye lens to allow a wider field of view from the inside and little to no visibility from the outside.The above text is a snippet from Wikipedia: Peephole
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peephole
Noun
The above text is a snippet from Wiktionary: peephole
and as such is available under the Creative Commons Attribution/Share-Alike License.