Trapdoor
- n. A door in a level for regulating the ventilating current; — called also weather door.
- n. A lifting or sliding door covering an opening in a roof or floor.
The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.