चोर दरवाज़ा — postern (Noun)
postern — i'p}kj]xqIr}kj]lqjax
Postern — Originally, a back door or gate; a private entrance; hence, any small door or gate.
Postern — A subterraneous passage communicating between the parade and the main ditch, or between the ditches and the interior of the outworks.
Postern — Back; being behind; private.