छतद्वार — trapdoor (Noun)
चोर दरवाज़ा — trapdoor (Noun)
कूट द्वार — trapdoor (Noun)
trapdoor — कूट द्वार]चोर दरवाज़ा
Trapdoor — A lifting or sliding door covering an opening in a roof or floor.
Trapdoor — A door in a level for regulating the ventilating current; -- called also weather door.