Rab-mag. Jeremiah 39:3; Jeremiah 39:13. A title borne by Nergal-sharezer, probably identical with the king called by the Greeks Neriglissar. [Nergal-Sharezer], (it probably means chief of the magi; at all events, it was "an office of great power and dignity at the Babylonian court, and probably gave its possessor, special facilities for gaining the throne.").