Judas hole


  • Webster's Revised Unabridged Dictionary
    • Judas hole a peephole or secret opening for spying.
    • ***


In literature:

When Timar saw her so, he struck his forehead with his fist, and turned his face from the Judas-hole through which he had been looking.
"Timar's Two Worlds" by Mór Jókai
For this reason, and because the place was forbidden, the boy lingered at the Judas-hole, gazing into it.
"The Man in Black" by Stanley J. Weyman