In Austria usual, regionally somewhat different designation (also high water) for a beverage, with which 1/8 wine is "sprayed" with mostly mineral water or also water on half a liter (thus a ratio of 1:3). However, there are no legal requirements for wine and the mixing ratio is determined by the guest or consumer. See also other products under mixed wine drinks and special wines.
I have great respect for the scope and quality of the wein.plus encyclopaedia. It is a unique place to go for crisp, sound information on terms from the world of wine.
Dr. Edgar Müller
Dozent, Önologe und Weinbauberater, Bad Kreuznach