dungeon /ˈdʌn.d͡ʒən/noun 6verb 1forms 3 noun6 •An underground prison or vault, typically built underneath a castle.Year after year he lay patiently in a dungeon. — 1911 •An area inhabited by enemies, containing story objectives, treasure, and bosses. •A room dedicated to sadomasochistic sexual activity. •The low area between two drumlins. •(no longer used) The main tower of a motte or castle; a keep or donjon. •(no longer used) A shrewd person. verb1 •To imprison in a dungeon. formsdungeoned · dungeoning · dungeons