| Sanctum (n.) A sacred place; hence, a place of retreat; a room reserved for personal use; as, an editor's sanctum. Thesaurus Entries adytum, ashram, cabinet, cell, cloister, closet, den, hermitage, hideaway, hideout, hiding place, holy of holies, holy place, ivory tower, lair, mew, privacy, recess, retreat, sacrarium, sanctuary, sanctum sanctorum, secret place, shrine, study |