Word.ws English Dictionary

trap-door

trap-door is the archaic form of trapdoor.

Meaning of trapdoor

Noun

trapdoor (plural trapdoors)

  1. A hinged or sliding door set into a floor or ceiling.
  2. Such a trap set into the floor of a stage to allow fast exits and entrances.
  3. A secret method of obtaining access to a program or online system; a backdoor.
  4. The special information that permits the inverse of a trapdoor function to be easily computed.
  5. A door in a level for regulating the ventilating current; a weather door.

See all 7 meanings of trapdoor

Forms of trap-door

pluraltrap-doors

Questions about trap-door

What is trap-door the archaic form of?
Trap-door is the archaic form of trapdoor.

Words near trap-door in the dictionary

  1. trap street
  2. trap streets
  3. trap yard
  4. trap yards
  5. trap-bath split
  6. trap-door
  7. trap-doors
  8. trap-house
  9. trap-houses
  10. trap-jaw ant
  11. trap-jaw ants

Source and license

Adapted from Wiktionary: trap-door (page history and authors); trapdoor (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “trap-door.” Word.ws, https://word.ws/trap-door. Based on Wiktionary, CC BY-SA 4.0.