Trapdoor (disambiguation)
- Trapdoor (disambiguation)
A trapdoor is a door set into a floor or ceiling.
The term may also have the following meanings:
* Trapdoor function, a type of mathematical function widely used in the field of cryptography.
* "Trap Door (magazine)," a Hugo Award-nominated science fiction fanzine edited by Robert Lichtman
* "The Trap Door", a British animated series.
* The Trap Door (game), a computer game based on the animated series.
* In computing, "trapdoor" is often a mistaken synonym for a "backdoor" a method used to circumvent normal authorization methods.
* In firearms, a trapdoor is a type of breechblock.
*"Trap Door", an Ozzy Osbourne song from the album Black Rain
*In ice road trucking, a "trapdoor" is a patch of ice that has broken loose from the surrounding surface, due to either the weight of passing trucks or the stress of waves in the underlying water. When a truck drives onto a trapdoor, it can be flipped partially or completely into the water.
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