Source : Webster's Revised Unabridged Dictionary (1913)

Archon \Ar"chon\, n. [L. archon, Gr. ?, ?, ruler, chief
   magistrate, p. pr. of ? to be first, to rule.] (Antiq.)
   One of the chief magistrates in ancient Athens, especially,
   by pre["e]minence, the first of the nine chief magistrates.
   -- {Ar*chon"tic}, a.