ice water

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Very cold or chilled water, especially for drinking, often with ice in it.
• noun Melted ice.

from The Century Dictionary.

• noun Water from melted ice.
• noun Water cooled by ice; iced water.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun water, for drinking, either chilled in ice, or with the addition of ice cubes

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun water served ice-cold or with ice