Usage examples "keyhole":
- There was a pause, during which Irene, holding her handkerchief to her lips, crept to the connecting door and stood with her ear close to the keyhole. - "The Desired Woman", Will N. Harben.
- " But," he added, " one would say that an all little light came through the keyhole." - "The Golden Silence", C. N. Williamson and A. M. Williamson.
- Presently a voice came through the keyhole, in a whisper. - "The Adventures of a Three-Guinea Watch", Talbot Baines Reed.