βοή
I. "a loud cry, shout", Hom., etc.:— "a battle-cry", βοὴν ἀγαθός good "at the battle-cry", Il.; βοᾶς μηδ᾽ ὄνομ᾽ ἔστω let there be not even the name "of war", Theocr.:—also of "the roar" of the sea, Od.; of the "sound" of musical instruments, Il., Pind.; "the cry" of birds or beasts, Soph., Eur.;— ὅσον ἀπὸ βοῆς ἕνεκεν "as far as sound went, only in appearance", Thuc., Xen.
II. = βοήθεια, "aid called for, succour", Aesch., Soph.