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Look up trapdoor in Wiktionary, the free dictionary.
A trapdoor is a door set into a floor or ceiling.
Trapdoor or Trap Door may also refer to:
- Trap Door (magazine), a science fiction fanzine
- The Trap Door, a British animated TV series
- The Trap Door (video game), a computer game based on the animated series
- Trapdoor (software), a piece of computer software used for network administration
- Trapdoor (company), a video game developer
- Trapdoor function, a type of mathematical function used in cryptography
- "Trapdoor", in computing, an outdated synonym for "backdoor", a method used to circumvent normal authorization
- Trap Door (EP), an EP by T-Bone Burnett, or the title song
- "Trap Door", a song by Ozzy Osbourne from Black Rain
- "Trap Door" Springfield, a single-shot breechloading rifle designed and produced at Springfield Armory during the late 19th century.
- Trapdoor spider, a spider
- Trap Door Spiders, a literary society
- Trapdoor mechanism for breech loading rifles
- "Trapdoor", a song by Twenty One Pilots from their self-titled album
- "Trapdoor", a song by King Gizzard & the Lizard Wizard from their album Paper Mâché Dream Balloon.
- "Trap Door", a song by Joey Badass from his album Summer Knights
- "Trap Door", a song by OneRepublic from their album Waking Up