βριάω
From LSJ
κνέφας δὲ τέμενος αἰθέρος λάβῃ → and darkness had covered the region of the sky
English (LSJ)
(βρῖ)
A make strong and mighty, Hes.Th.447. II intr., to be strong, βριάων Opp.H.5.96: in both senses, [Ζεὺς] ῥέα μὲν γὰρ βριάει, ῥέα δὲ βριάοντα χαλέπτει Hes.Op.5.