κυβιστητήρ
From LSJ
μή μοι θεοὺς καλοῦσα βουλεύου κακῶς· πειθαρχία γάρ ἐστι τῆς εὐπραξίας μήτηρ, γυνὴ Σωτῆρος· ὦδ᾽ ἔχει λόγος → When you invoke the gods, do not be ill-advised. For Obedience is the mother of Success, wife of Salvation—as the saying goes.
English (LSJ)
ῆρος, ὁ,
A tumbler, δοιὼ δὲ κυβιστητῆρε κατ' αὐτοὺς μολπῆς ἐξάρχοντες ἐδίνευον κατὰ μέσσους Il. 18.605, Od.4.18. 2 diver, Il.16.750. 3 one who pitches headlong, E.Ph.1151. II later as Adj., tumbling, κυδοιμός Tryph. 192.