δνοπάλιξις
From LSJ
Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνον → Anaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep
English (LSJ)
εως, ἡ, A shaking, fluttering, Sch.Opp. H.2.295.
German (Pape)
[Seite 651] ἡ, das Schütteln, Umherwerfen, Schol. Opp. H. 2, 295; VLL.