(n) (Judaism) sanctuary comprised of the innermost chamber of the Tabernacle in the temple of Solomon where the Ark of the Covenant was kept, Syn. sanctum sanctorum
n. [ L., p. p. of sancire to consecrate. ] A sacred place; hence, a place of retreat; a room reserved for personal use; as, an editor's sanctum. [ 1913 Webster ]
‖ Sanctum sanctorum [ L. ], the Holy of Holies; the most holy place, as in the Jewish temple. [ 1913 Webster ]