ὑδροφυλακέω

A. to be a ὑδροφύλαξ, PLond. 1.131r.50 (i A. D.); guard as ὑ., τὸ ῥῆγμα ib.60; χώματα ‐πεφυλακημένα POxy. 729.23 (ii A. D.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project