τετράψηλος

From LSJ

ἄνω ποταμῶν ἱερῶν χωροῦσι παγαί → the springs of sacred rivers flow upward, backward to their sources flow the streams of holy rivers

Source

Greek Monolingual

-η, -ο, Ν
πολύ ψηλός, πανύψηλος.
[ΕΤΥΜΟΛ. < επιτ. τετρ(α)- + ψηλός].