oubliette

英 [,uːblɪ'et]美

n. （只在牢顶有出口的）地下密牢

英文词源

oubliette (n.)

"secret dungeon reached only via trapdoor," 1819, from French oubliette (14c.), from Middle French oublier "to forget, show negligence," Old French oblier, oblider, from Vulgar Latin *oblitare, from Latin oblitus, past participle of oblivisci "to forget" (see oblivion).

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