Trap Doors

Trap Doors

 

in a theater, openings in the floor of a stage, formed by replacing one or several floorboards with a frame of the same dimensions. Some trap doors designed for various theatrical effects, such as sudden disappearances and appearances of persons and objects, are equipped with platforms that can be raised and lowered.

References in classic literature ?
It was reached by a trap door in the middle of the floor, from which a ladder led down into the small, dark hole.
Aunt Em, badly frightened, threw open the trap door in the floor and climbed down the ladder into the small, dark hole.
She crept to the hole, caught Toto by the ear, and dragged him into the room again, afterward closing the trap door so that no more accidents could happen.
For days and nights at a time Virginia never saw him, his meals being passed in to him by Sing through a small trap door that had been cut in the partition wall of the "court of mystery" as von Horn had christened the section of the camp devoted to the professor's experimentations.
Sing Lee who stood just without the trap door through which he was about to pass Professor Maxon's evening meal to him could not be blamed for overhearing the conversation, though it may have been culpable in him in making no effort to divulge his presence, and possibly equally unpraiseworthy, as well as lacking in romance, to attribute the doctor's avowal to his knowledge of the heavy chest.
A moment later Sing's knock aroused Professor Maxon from the reverie into which he had fallen, and he stepped to the trap door to receive his evening meal.
Now there was a trap door {169} on the wall, while at one end of the pavement {170} there was an exit leading to a narrow passage, and this exit was closed by a well-made door.
He was standing near towards the trap door, {174} and held his lyre in his hand.
He gave no sign; but when the low step gliding along the curbstone came to his feet he dodged in skilfully in front of the big turning wheel, and spoke up through the little trap door almost before the man gazing supinely ahead from his perch was aware of having been boarded by a fare.
Tendering a coin through the trap door the fare slipped out and away, leaving an effect of uncanny, eccentric ghastliness upon the driver's mind.
If they are unsure of the answer they can spread the money across the trap doors, but if the answer is wrong their winnings will fall through the doors and be lost forever.
At the Opening Ceremony, an apparent equipment glitch left the 60,000-member audience at the indoor stadium wondering what happened when there was a long delay and eventually only three of the four arms of the cauldron emerged from trap doors on the floor of the stadium.