τους φίλους λόγων τέχναιν επαίδευσας → Using 2 artifices, you educated (taught) those who love rhetoric.
att. = ἀλκυών.
ἁλκῠών: эп.-дор. ἀλκυών, όνος ἡ зоол. альциона, зимородок (Alcedo) Hom., Arph., Arst., Theocr., Plut., Anth.