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peephole

play
noun peep·hole \ˈpēp-ˌhōl\

Simple Definition of peephole

  • : a hole that is used to look through something (such as a door) to the other side

Source: Merriam-Webster's Learner's Dictionary

Full Definition of peephole

  1. :  a hole or crevice to peep through

Circa 1570

First Known Use of peephole

circa 1570


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