ἐκλάπτω
From LSJ
ποταμῷ γὰρ οὐκ ἔστιν ἐμβῆναι δὶς τῷ αὐτῷ → it is impossible to step twice in the same river, you cannot step twice into the same rivers
English (LSJ)
fut.
A -λάψομαι Ar.Pax885:—drink off, Id.Ach.1229, etc.
German (Pape)
[Seite 766] ausschlappen, gierig austrinken, Ar. Ach. 1229; im med. fut., Pax 850, verschlingen, wie Lycophr. 1201.