The Collaborative International Dictionary
Trapdoor \Trap"door`\, n.
(Arch.) A lifting or sliding door covering an opening in a roof or floor.
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(Mining) A door in a level for regulating the ventilating current; -- called also weather door.
--Raymond.Trapdoor spider (Zo["o]l.), 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 ( Cteniza Californica).
Usage examples of "weather door".
At that moment, the starboardside weather door blew open too, and just like the first, another figure stood, unarmed, in the doorway.
Happy went up and took the weather door off and got the keys and opened her up and inside it was all gray dank gloomy muddy floor with rain-stained walls and a dismal wooden bunk with a mattress made of ropes (so as not to attract lightning) and the windows completely impenetrable with dust and worst of all the floor littered with magazines torn and chewed up by mice and pieces of groceries too and uncountable little black balls of rat turd.