κραταιίς

English (LSJ)

ἡ, (κρατύς) of the stone of Sisyphus, ὅτε μέλλοι ἄκρον ὑπερβαλέειν, τότ' ἀποστρέψασκε κραταιίς when it was just about to surmount the top, then did

   A mighty weight turn it back, dub. in Od.11.597 (taken as Adv., violently, by Aristarch.; as κράται' ἴς (where κράταια may be an old fem. of κρατύς like *πλάταια (cf. Skt. pṛthivī), pl. Πλαταιαί, fem. of πλατύς) by Ptol.Asc. ap. Hdn.Gr.2.153).    II (proparox.) as pr.n., the Mighty one, name of the mother of Scylla, Od.12.124.