peephole means A small hole, opening, or piece of glass, especially in a door, through which one can look without being seen. Lexicurio rates it Distinctive — a strength score of 67 out of 100.
peephole is pronounced /ˈpiːphəʊl/.
Etymology
From peep + hole.
noun
- 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.”