LSJ
ου, ὁ, water-finder, Lat. aquilex, Gloss. worker employed by the Nile conservancy, BGU 14ii19 (iii AD), PSI 1.83.11 (iii AD); dat. pl. spelt -ίτοις PMasp. p. 53 (vi AD).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
[ῑ], ὁ, der Wassersucher (?).
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)