φαλαγγηδόν
From LSJ
λίγεια μινύρεται θαμίζουσα μάλιστ' ἀηδών → the sweet-voiced nightingale mourns constantly, the sweet-voiced nightingale most loves to warble
English (LSJ)
Adv.
A in phalanxes, Il.15.360, Plb.3.115.12, Polyaen.7.44.2, Onos.21.6.
φαλαγγηδόν