DICT.TW Dictionary Taiwan

 Trap·door n.
 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.
 Trapdoor spider Zool., 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).
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 trap-door spider
      n : American spider that constructs a silk-lined nest with a
          hinged lid