clear-sounding, musical, shrill
Ancient Greek word, found 10 times in the texts on Socratos.
Euripides, Electra 151: οἷα δέ τις κύκνος ἀχέτας
Hesiod, Works and Days 582: ἦμος δὲ σκόλυμός τʼ ἀνθεῖ καὶ ἠχέτα τέττιξ