εἰς τὸν τετρημένον πίθον ἀντλεῖν → run water into a punctured pitcher, to the perforated jar bale water, labour in vain, labor in vain
subs.
Of persons or things: P. and V. ἀρετή, ἡ. The excellence of the soil: P. ἀρετὴ γῆς (Thuc. 1, 2).