προέλασις
From LSJ
ἀεί ποτ' εὖ μὲν ἀσκός εὖ δὲ θύλακος ἅνθρωπός ἐστι → this guy's always good at being a wineskin, and at times a winesack
English (LSJ)
εως, ἡ,
A riding forward: cavalry charge, X.Eq.Mag.8.3 (pl.).
German (Pape)
[Seite 719] ἡ, das Vorreiten, Vorrücken, Xen. Hipparch. 8, 3.
Greek (Liddell-Scott)
προέλᾰσις: ἡ, τὸ προελαύνειν, ὁρμᾶν πρὸς τὰ ἐμπρὸς, Ξεν. Ἱππαρχ. 8, 3.