LSJ
ὕδωρ, water from thawed ice, Herod.Med. ap. Orib. 5.30.18, prob. in Damocr. ap. Gal. 14.131.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
ὕδωρ, geschmolzenes Eiswasser, sp. Medic.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)