ἐξηχ-έω,
A. sound forth,
LXX Jl. 3(4).14 , Nech. ap. Vett.Val. 241.17 : c. acc. cogn.,τὸ κύκνειον ἐξηχεῖν sound forththe swan's song, i.e.give vent todying prayers, Plb. 30.4.7 , cf. Ph. 2.24 :— Pass. , Id. 2.107 , 1 Ep.Thess. 1.8 , Hsch. , etc.
II. utter senseless sounds,of idiots, Polem.Phgn. 51 .