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game developer Trapdoor function, a type of mathematical function used in cryptography "Trapdoor", in computing, an outdated synonym for "backdoor", a method used to circumvent normal authorization "Trap Door" Springfield, a single-shot breechloading rifle designed and produced at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
Music Trap Door (EP), an EP by T-Bone Burnett, or the title song "Trap Door", a song by Joey Badass from his album Summer Knights "Trapdoor", a song by King Gizzard & the Lizard Wizard from their album Paper Mâché Dream Balloon "Trap Door", a song by OneRepublic from their album Waking Up "Trap Door", a song by Ozzy Osbourne from Black Rain "Trapdoor", a song by Twenty One Pilots from their self-titled album