ἐπιτήρησις
From LSJ
ὣς ὁ μὲν ἔνθ' ἀπόλωλεν, ἐπεὶ πίεν ἁλμυρὸν ὕδωρ → so there he perished, when he had drunk the salt water
English (LSJ)
εως, ἡ,
A observation, οὐρανίων Porph.Abst.4.8. 2 guardianship, Sch.rec.S.Ant.1135. 3 office of ἐπιτηρητής 2, BGU478.9 (ii A.D.).
German (Pape)
[Seite 992] ἡ, das Abpassen; das Achthaben, die Beobachtung, Sp.