A brother of Moses and high priest of the Hebrews.
In the Old Testament, the elder brother of Moses and coleader of the Hebrews in their march from Egypt to the Promised Land of Canaan. He made the Golden Calf for the Hebrews to worship when they despaired of Moses' return from Mount Sinai, yet was allowed to continue as high priest.
All his descendants are hereditary high priests, called the cohanim, or cohens, and maintain a special place in worship and ceremony in the synagogue. The lesser services are performed by Levites.