Webster's 1913 Dictionary
TRAPDOOR
TRAPDOOR Trap "door `, n.
1. (Arch. )
Defn: A lifting or sliding door covering an opening in a roof or floor.
2. (Mining )
Defn: 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 ).
New American Oxford Dictionary
trapdoor
trap door |ˈtrapˌdôr ˈtræpˌdɔ (ə )r |(also trap door ) ▶noun a hinged or removable panel in a floor, ceiling, or roof. • a feature or defect of a computer system that allows surreptitious unauthorized access to data.
trapdoor spider
trap |door spider ▶noun a spider which lives in a burrow with a hinged cover like a trapdoor. ●Family Ctenizidae, suborder Mygalomorphae. • Austral. a funnel-web spider.
Oxford Dictionary
trapdoor
trap |door |trapˈdɔː | ▶noun a hinged or removable panel in a floor, ceiling, or roof. • a feature or defect of a computer system which allows surreptitious unauthorized access to data.
trapdoor spider
trap |door spider ▶noun a spider which lives in a burrow with a hinged cover like a trapdoor. ●Family Ctenizidae, suborder Mygalomorphae. • Austral. a funnel-web spider.
Sanseido Wisdom Dictionary
trapdoor
tr á p d ò or 名詞 C (屋根 天井などの )はね上げ戸 ; (床 舞台などの )落とし戸 .
The Wordsmith Dictionary