ὑδροπότης
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
ου, ὁ, (πίνω)
A water-drinker, X.Cyr.6.2.29; used of a thin-blooded, mean-spirited fellow, AP11.20 (Antip. Thess.); cf. ὑδατοπότης.