Aaron: the enlightened; a seer or initiate. The rod, or wand, with a serpent twined round it, which was used in the mosaic ceremony of initiation; appears to have contained the sacred fire. Now commonly employed as an emblem signifying a physician; similar to the caduceus (q.v.) of Hermes. Aaron, the first high-priest, brother of Moses the law-giver, belonged to the tribe of Levi, symbolized in the Sign Sagittarius; religion, prophecy. v. Tribes of Israel.