παλαιομήτωρ
From LSJ
βωμὸν Ἀριστοτέλης ἱδρύσατο τόνδε Πλάτωνος, ἀνδρὸς ὃν οὐδ' αἰνεῖν τοῖσι κακοῖσι θέμις → Aristotle had this altar of Plato set up — Plato, a man whom the wicked dare not even mention in praise
Russian (Dvoretsky)
πᾰλαιομήτωρ: дор. παλαιομάτωρ, ορος (μᾱ) ἡ праматерь, прародительница Eur.