κατάκρημνος
From LSJ
τούτου δὲ συμβαίνοντος ἀναγκαῖον γίγνεσθαι πάροδον καὶ τροπὰς τῶν ἐνδεδεμένων ἄστρων → but if this were so, there would have to be passings and turnings of the fixed stars
English (LSJ)
ον,
A steep and rugged, Χῶρος Batr.154, cf. Gp.18.18.2.
German (Pape)
[Seite 1356] abschüssig, steil; χῶρος Batrach. 153; Sp.