The helper in distress, a surname of Apollo at Athens, the origin of which is explained in different ways. According to some, the god was thus called because he had assisted the Athenians in the war with the Amazons, who were defeated on the seventh of Boëdromion, the day on which the Boëdromia were afterwards celebrated. (Plut. Thes. 27.) According to others, the name arose from the circumstance, that in the war of Erechtheus and Ion against Eumolpus, Apollo had advised the Athenians to rush upon the enemy with a war-shout (boê), if they would conquer. (Harpocrat., Suid., Etym. M. s.v. Boêdromios; Callim. Apoll. 69.)