1n. water from melted snow, used for drinking and other purposes.
1771  (1947)  No springs near; drink snow water nine months of the year. In summer keep three draught horses to haul water & draw stones.
1864  We had nothing by which to make snow-water, and we had vainly searched the rocks for some.
1913  Taking care to avoid the space beneath it, the man built his little fire, and boiled snow water.
1966  We would . . . boil a pot of snow water tea, and sit on a log. . . .
2n. melted snow, often that lying on the surface of sea ice.
1924  His tremendous sealskin boots that reached right up to his hips he took off, shook out the ice and snow-water, and tied them firmly one on the back of each of the two dogs.
1956  A little warm snow water still lay in the rocky basins on top of the hills. . . .