ἔφαλσις
From LSJ
English (LSJ)
εως, ἡ, bouncing on to a surface, Arist.Pr.913b30 (s.v.l.).
German (Pape)
[Seite 1112] ἡ, das Darauflosspringen, der Angriff.
Greek (Liddell-Scott)
ἔφαλσις: -εως, ἡ, τὸ ἐφάλλεσθαι ἐπί τινος, Ἀριστ. Προβλ. 16. 4, 4.