ἀντανακοπή
From LSJ
Τί κοινότατον; ἐλπίς. καὶ γὰρ οἷς ἄλλο μηδέν, αὕτη πάρεστι → What is most common? Hope. For those who have nothing else, that is always there.
English (LSJ)
ἡ,
A recoil, κυμάτων Arist.Mu.396a19.
German (Pape)
[Seite 244] , gegenseitiges Zurückschlagen, Zurück prallen, von Wellen, Arist. mund. 4, 31.