ἰαχή

A. cry, shout, both of victor and vanquished, Il. 15.396, etc.; wail, shriek, Od. 11.43; also, a joyous sound, ἰαχὰ ὑμεναίων Pi. P. 3.17, cf. E. Tr. 337 (lyr., pl.); κροτάλων τυπάνων τε h.Hom. 14.3; αὐλῶν Lyr.Adesp. 96; συρίγγων E. IA 1039 (lyr.): in pl., generally, shouts of joy, Thgn. 779, E. Ba. 149 (lyr.); but πολύδακρυς ἰ. A. Pers. 940, cf. E. El. 142, Ph. 1302 (all lyr.). (vι‐, cf. Il. 4.456: a vowel is not elided before it in Ep. exc. in h.Hom. 14.3, Hes. Th. 708, Sc. 404: Trag. only in lyr.; for the quantity cf. foreg.)