μητρῷον
From LSJ
πάλιν δ' ὅ γε λάζετο μῦθον → he took back his speech, he retracted his speech, he altered his speech
Russian (Dvoretsky)
μητρῷον: τό (sc. ἱερόν) храм «великой матери», т. е. Кибелы (служивший в Афинах государственным архивом) Dem.
Mantoulidis Etymological
(=ναός τῆς Δήμητρας ἤ τῆς Κυβέλης, ἀρχεῖο). Ἀπό τό μήτηρ, ὅπου δές γιά περισσότερα παράγωγα.
