Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of trapdoor is as below...

Trapper :: Trapper (n.) A boy who opens and shuts a trapdoor in a gallery or level.

Trapdoor :: Trapdoor (n.) A door in a level for regulating the ventilating current; -- called also weather door.

Tetraneumona :: Tetraneumona (n. pl.) A division of Arachnida including those spiders which have four lungs, or pulmonary sacs. It includes the bird spiders (Mygale) and the trapdoor spiders. See Mygale..

Mygale :: Mygale (n.) A genus of very large hairy spiders having four lungs and only four spinnerets. They do not spin webs, but usually construct tubes in the earth, which are often furnished with a trapdoor. The South American bird spider (Mygale avicularia), and the crab spider, or matoutou (M. cancerides) are among the largest species. Some of the species are erroneously called tarantulas, as the Texas tarantula (M. Hentzii)..

Valve :: Valve (n.) A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, as in the barberry..

Trapdoor :: Trapdoor (n.) A lifting or sliding door covering an opening in a roof or floor.

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