225. The preposition πρό means forward, in front. It is seldom used as an adverb
Il. 13.799 πρὸ μέν τʼ ἄλλ, κτλ.
Il. 16.188 ἐξάγαγε πρὸ φόωσδε
brought forth to the light
and of time
Il. 1.70 πρό τʼ ἐόντα
In one or two other instances we may recognize either the free adverbial use or tmesis.
Il. 1.195 πρὸ γὰρ ἧκε
Il. 1.442 πρό μʼ ἔπεμψε
Od. 1.37 πρό οἱ εἴπομεν
Traces of a use of πρό with the locative may be seen in the phrases
in the face of heaven
in front of Troy
and (perhaps in the temporal sense) ἠῶθι πρό before dawn. In these cases the meaning is to the front in, hence immediately before.
With a genitive, on the other hand, πρό means in front with respect to, in adνance of; hence, in a more or less metaphorical sense, in defense of.
Il. 8.57 πρό τε παίδων καὶ πρὸ γυναικῶν
The case is here the ablatival genitive (as with ὑπέρ and words of comparison).
But in Il. 4.382
πρὸ ὁδοῦ ἐγένοντο
the genitive is partitive, got forward on the way; and so perhaps Il. 16.667
forward in the flight
i.e. having betaken themselves to flight (so Düntzer a.l.).
The temporal sense is rare in Homer.
Od. 15.524, 17.476 πρὸ γάμοιο
Il. 10.224 καί τε πρὸ ὁ τοῦ ἐνόησε
one thinks of a thing before another