ὀκταστάδιον
From LSJ
πέτρην κοιλαίνει ρανὶς ὕδατος ἐνδελεχείῃ → constant dropping wears away a stone, constant dripping will wear away the hardest stone, little strokes fell big oaks, constant dripping wears the stone, constant dropping wears the stone, constant dripping will wear away a stone
Greek (Liddell-Scott)
ὀκταστάδιον: τό, μῆκος ὀκτὼ σταδίων, Πολύβ. 34. 12, 4, Στράβ. 322.
Russian (Dvoretsky)
ὀκταστάδιον: (ᾰδ) τό расстояние в восемь стадиев Polyb.