a transparent, odorless, tasteless liquid, a compound of hydrogen and oxygen, H 2 O, freezing at 32°F or 0°C and boiling at 212°F or 100°C, that in a more or less impure state constitutes rain, oceans, lakes, rivers, etc.: it contains 11.188 percent hydrogen and 88.812 percent oxygen, by weight.
a special form or variety of this liquid, as rain.
Often, waters. this liquid in an impure state as obtained from a mineral spring: Last year we went to Marienbad for the waters.
the liquid content of a river, inlet, etc., with reference to its relative height, especially as dependent on tide: a difference of 20 feet between high and low water.
the surface of a stream, river, lake, ocean, etc.: above, below, or on the water.