Found 2 items, similar to donjon.
English → English (WordNet) Definition: donjon donjon n : the main tower within the walls of a medieval castle or fortress [syn: keep, dungeon]
English → English (gcide) Definition: Donjon Donjon \Don"jon\ (d[u^]n"j[u^]n), n. [See Dungeon.] The chief tower, also called the keep; a massive tower in ancient castles, forming the strongest part of the fortifications. See Illust. of Castle. [1913 Webster]