βαρυβρεμέτειρα
From LSJ
προγράψαντες οὖν τά τε θεωρήματα καὶ τὰ ἐπιτάγματα τὰ χρεῖαν ἔχοντα εἰς τὰς ἀποδείξιας αὐτῶν μετὰ ταῦτα γραψοῦμές τοι τὰ προκείμενα → having therefore written at the beginning the theorems and the postulates that are necessary for their proofs, we will then write out for you the propositions
German (Pape)
[Seite 433] stark tosend, Orph. H. 9, 25.
Spanish (DGE)
(βᾰρυβρεμέτειρα) -ας la que retumba gravemente (Φύσις) Orph.H.10.25.