[cho.ra.gus] or cho.re.gus n [L & Gk; L choragus, fr. Gk choragos, choregos, fr. choros chorus + agein to lead--more at agent] (1625) 1: the leader of a chorus or choir; broadly: the leader of any group or movement
2: a leader of a dramatic chorus in ancient Greece -- cho.rag.ic adj