1. A clear, colorless, odorless, and tasteless liquid, H2O, essential for most plant and animal life and the most widely used of all solvents. Freezing point 0°C (32°F); boiling point 100°C (212°F); specific gravity (4°C) 1.0000; weight per gallon (15°C) 8.338 pounds (3.782 kilograms).
a. Any of various forms of water: waste water.
b. Naturally occurring mineral water, as at a spa. Often used in the plural.
a. A body of water such as a sea, lake, river, or stream.
b. waters A particular stretch of sea or ocean, especially that of a state or country: escorted out of British waters.
a. A supply of water: had to turn off the water while repairing the broken drain.
b. A water supply system.