DUNGEON Meaning of DUNGEON in English [dun.geon] n [ME donjon, fr. MF, fr. (assumed) VL domnion-, domnio keep, mastery, fr. L dominus lord--more at dominate] (14c) 1: donjon 2: a dark usu. underground prison or vault Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012