prytane

noun2

1. •
   The priest or chief magistrate who presided over a prytaneum.

   • The priest of the city hearth was called "king", "prytane", or "archon". The term "prytane" was derived from the fact that he was the priest of the prytaneum, or local hearth. — 1962
2. •
   A board of magistrates presiding over a prytaneum.