ράχις

From LSJ

νᾶφε καὶ μέμνασο ἀπιστεῖν → keep a clear head and remember not to believe a thing (Epicharmus fr. 250)

Source

Greek Monolingual

-εως, ἡ, ΜΑ
βλ. ράχη.

Mantoulidis Etymological

-εως (=ράχη). Ἀπό τό ρήγνυμι, ὅπου δές γιά περισσότερα παράγωγα.