Proper name of the patriarch of the Jewish priesthood; hence used of a leader of the church. (Rare, and perh. only in loc. cit.)

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1607.  Topsell, Four-footed Beasts, Ep. Dedic. Aarons, and such as sit at the Helme of the Church, or are worthily advanced for their knowledge in Learning and State, I mean both Bishops and Doctors.

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