ὑδρεία
From LSJ
Πρόσεχε τῷ ὑποκειμένῳ ἢ τῇ ἐνεργείᾳ ἢ τῷ δόγματι ἢ τῷ σημαινομένῳ. → Look to the essence of a thing, whether it be a point of doctrine, of practice, or of interpretation.
English (LSJ)
ἡ,
A drawing water, fetching water, Th.7.13, Pl.Lg.844b, Plb.2.9.2, etc.: in pl., Pl.Ax.371e. 2 distribution of water, watering, irrigation, Id.Lg.761c, Thphr.HP2.6.3: metaph., ἡ ἐκ τῆς κοιλίας ἐπὶ τὰς φλέβας ὑ, Pl.Ti.78b, cf. 77d. II watering-place, Plu.Them. 9.—Cf. ὑδρία fin.