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Peephole vs Keyhole - What's the difference?

peephole | keyhole |

As nouns the difference between peephole and keyhole

is that peephole is a small hole, opening or piece of glass, especially in a door, through which to look while keyhole is the hole in a lock where the key is inserted and turns.

peephole

English

Noun

(en noun)
  • A small hole, opening or piece of glass, especially in a door, through which to look.

    • keyhole

    English

    Noun

    (wikipedia keyhole)
  • The hole in a lock where the key is inserted and turns.
  • (carpentry) A hole or excavation in beams intended to be joined together, to receive the key that fastens them.
  • (engineering) A mortise for a key or cotter.
  • (lasers)
    • laser keyhole welding
    keyhole plasma

    Derived terms

    * keyhole neckline * keyhole surgery