Peephole

//ˈpiphoʊl// noun

noun ·Uncommon ·College level

Definitions

Noun
  1. 1
    A small hole, opening, or piece of glass, especially in a door, through which one can look without being seen.

    "It’s a conjurer’s den. — I shouldn’t be surprised if cabby’s old gent is staring at us all the while from some peephole of his own."

  2. 2
    a hole (in a door or an oven etc.) through which you can peep wordnet

Synonyms

All synonyms
spyholeair holearmholebeaconbelvederebleachers

Example

More examples

"Tom looked through the peephole."

Etymology

From peep + hole.

Related phrases

peephole optimization

More for "peephole"

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.