trapdoor

1. n. A lifting or sliding door covering an opening in a roof or floor. Source: opted

2. n. A door in a level for regulating the ventilating current; -- called also weather door. Source: opted

3. 1. (Arch.) A lifting or sliding door covering an opening in a roof or floor. 2. (Mining) A door in a level for regulating the ventilating current; -- called also weather door. Raymond. Trapdoor spider (Zoöl.), any one of several species of large spiders which make a nest consisting of a vertical hole in the earth, lined with a hinged lid, like a trapdoor. Most of the species belong to the genus Cteniza, as the California species (C. Californica). Source: webster

4. A lifting or sliding door covering an opening in a roof orfloor. Source: adambom

5. n:100 n. A lifting or sliding door covering an opening in a roof or floor. n. A door in a level for regulating the ventilating current; -- called also weather door. Source: ecdict

Thesaurus links

From the definitions

Explore more