An underground prison or vault, typically built underneath a castle. / (obsolete) The main tower of a motte or castle; a keep or donjon. / (obsolete) A shrewd person.

(transitive) To imprison in a dungeon.

plural of dungeon

(chiefly role-playing games) One who navigates through a dungeon.

plural of dungeoneer

possessing medieval, dungeon-like attributes or atmosphere

simple past tense and past participle of dungeon

present participle of dungeon

plural of dungeoner

(obsolete) A jailer.