Lewis & Short

archĭsynăgōgus, i, m., = ἀρχισυνάγωγος, the priest that was chief ruler of the synagogue, Vulg. Marc. 5, 22; ib. Luc. 13, 14; ib. Act. 18, 8 al.; Lampr. Alex. Sev. 28 fin.; Cod. Th. 16, 8, 13 al.