This room is fitted up with trapdoors, blind windows and the like.
Trapdoors were open everywhere, and from hundreds of these openings, Aranians were scuttling toward us.
He sounded the walls for secret panels, and the floor for trapdoors; but all was so far safe.
But the sugar manufacturer had had all the trapdoors removed, and Robineau considered that he had done very well.
Stoppings and trapdoors are also interposed in various parts of the workings, in order to give a direction to the draft.
The muskrat comes up through the passage, pushing a bunch of moss or sticks and does not notice passing the trapdoors.
Notched beams led up to trapdoors in the roofs, similar beams penetrated into the interior below.
The raised combing about trapdoors or roof holes afforded the first suggestion in this direction.
In Zui close crowding of the cells has led to an exceptionally frequent use of roof-lights and trapdoors.