1. (n.) A lifting or sliding door covering an opening in a roof or floor.
2. (n.) A door in a level for regulating the ventilating current; -- called also weather door.
| Trapdoor 1. (n.) A lifting or sliding door covering an opening in a roof or floor. 2. (n.) A door in a level for regulating the ventilating current; -- called also weather door. | |