προχόω
From LSJ
ἔστιν δέ που ἡ μὲν ἐπὶ σώμασι γυμναστική, ἡ δ' ἐπὶ ψυχῇ μουσική → I think I am right in saying that we have physical exercise for the body and the arts for the soul
English (LSJ)
collat. pres. of προχώννυμι,
A pile in front, heap up, χῶμα Pl. Criti. 111b (nisi leg. προσχοῖ), cf. Aristid.1.128J.