ἅρπυιαι
From LSJ
ἐν ταῖς ἀνάγκαις χρημάτων κρείττων φίλος → it is better in times of need to have friends rather than money, a friend in need is a friend indeed (Menander, Sententiae monostichoi 143)
German (Pape)
[Seite 359] αἱ, die Raubenden, s. Nom. propr.
Mantoulidis Etymological
(=ἁρπάχτες, θύελλες, ἀνεμοστρόβιλοι). Ἀπό τό ἁρπάζω, ὅπου δές γιά περισσότερα παράγωγα.