I.a putting forward, esp. of a weapon for defence, τὰ δόρατα εἰς προβολὴν καθιέναι to bring the spears to the rest, Xen.; ἐν προβολῇ θέσθαι ξίφος to bring it to the guard, Anth.; ἐν προβολῇ ἑστάναι to stand with spear in rest, Plut.:—of a pugilist, a lunging out with the fist, Theocr.
II.a projection, a jutting rock, foreland or tongue of land, Soph.; Νειλόρυτος πρ. i. e. the Delta of the Nile, Anth.
III.a thing held before one as a defence, a fence, screen, bulwark, Xen.: c. gen. a defence against, δείματος καὶ βελέων Soph.; θανάτου Eur.
IV.a legal process in which the plaintiff appealed to the Ecclesia to support his suit before bringing it into court, pl. προβολαί, Xen., Dem., etc.