ἕκπλεθρος
From LSJ
κοινὴ γὰρ ἡ τύχη καὶ τὸ μέλλον ἀόρατον → fortune is common to all, the future is unknown | fortune is common to all and the future unknown | fate is common to all and the future unknown
English (LSJ)
ον,
A six plethra long, Phryn.387 ; in ἕ. ἀγών, = στάδιον, E.El.883, and κῶλον ἕ. δρόμου Id.Med.1181 (where Sch. expl. μέγα καὶ ὑπερβαῖνον πλέθρου μέτρον) ἔ. is the better reading, narrowing.