μητροφόνος
From LSJ
Εὐφήμει, ὦ ἄνθρωπε· ἁσμενέστατα μέντοι αὐτὸ ἀπέφυγον, ὥσπερ λυττῶντά τινα καὶ ἄγριον δεσπότην ἀποδράς → Hush, man, most gladly have I escaped this thing you talk of, as if I had run away from a raging and savage beast of a master
English (LSJ)
ον,
A murdering one's mother, ἀντίποιν' ὡς τίνῃς ματροφόνου δύας (Casaub. for μητροφόνας) A.Eu.268 (lyr.). 2 as Subst., matricide, ib.257 (lyr.). II slayer of a mother, Nonn.D.43.147, al.
German (Pape)
[Seite 180] die Mutter mordend; δύα, Aesch. Eum. 258; subst., der Muttermörder, 246.