ὕδριος
From LSJ
ἧς ἂν ἐπ' ἐλάχιστον ἀρετῆς πέρι ἢ ψόγου ἐν τοῖς ἄρσεσι κλέος ᾖ → of whom there is least talk either for praise or blame, of whom there is least notoriety among the men either for praise or blame
English (LSJ)
α, ον, of water, περὶ ὑδρίων ὡροσκοπείων On water-clocks, a lost treatise by Hero, mentioned by Hero Spir.1 Prooemia, and by Procl.Hyp.4.73.