| 1. | a transparent, odorless, tasteless liquid, a compound of hydrogen and oxygen, H2O, 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. |
| 2. | a special form or variety of this liquid, as rain. |
| 3. | Often, waters. this liquid in an impure state as obtained from a mineral spring: Last year we went to Marienbad for the waters. |
| 4. | the liquid content of a river, inlet, etc., with reference to its relative height, esp. as dependent on tide: a difference of 20 feet between high and low water. |
| 5. | the surface of a stream, river, lake, ocean, etc.: above, below, or on the water. |
| 6. | waters,
|
| 7. | a liquid solution or preparation, esp. one used for cosmetic purposes: lavender water; lemon water. |
| 8. | Often, waters. Medicine/Medical.
|
| 9. | any of various solutions of volatile or gaseous substances in water: ammonia water. |
| 10. | any liquid or aqueous organic secretion, exudation, humor, or the like, as tears, perspiration, or urine. |
| 11. | Finance. fictitious assets or the inflated values they give to the stock of a corporation. |
| 12. | a wavy, lustrous pattern or marking, as on silk fabrics or metal surfaces. |
| 13. | (formerly) the degree of transparency and brilliancy of a diamond or other precious stone. |
| 14. | take water, (of a boat) to allow water to enter through leaks or portholes or over the side. |
| 15. | to sprinkle, moisten, or drench with water: to water the flowers; to water a street. |
| 16. | to supply (animals) with water for drinking. |
| 17. | to furnish with a supply of water, as a ship. |
| 18. | to furnish water to (a region), as by streams; supply (land) with water, as by irrigation: The valley is watered by a branch of the Colorado River. Our land is watered by the All-American Canal. |
| 19. | to dilute, weaken, soften, or adulterate with, or as with, water (often fol. by down): to water soup; to water down an unfavorable report. |
| 20. | Finance. to issue or increase the par value of (shares of stock) without having the assets to warrant doing so (often fol. by down). |
| 21. | to produce a wavy, lustrous pattern, marking, or finish on (fabrics, metals, etc.): watered silk. |
| 22. | to discharge, fill with, or secrete water or liquid, as the eyes when irritated, or as the mouth at the sight or thought of tempting food. |
| 23. | to drink water, as an animal. |
| 24. | to take in a supply of water, as a ship: Our ship will water at Savannah. |
| 25. | of or pertaining to water in any way: a water journey. |
| 26. | holding, or designed to hold, water: a water jug. |
| 27. | worked or powered by water: a water turbine. |
| 28. | heating, pumping, or circulating water (often used in combination): hot-water furnace; city waterworks. |
| 29. | used in or on water: water skis. |
| 30. | containing or prepared with water, as for hardening or dilution: water mortar. |
| 31. | located or occurring on, in, or by water: water music; water frontage. |
| 32. | residing by or in, or ruling over, water: water people; water deities. |
| 33. | above water, out of embarrassment or trouble, esp. of a financial nature: They had so many medical bills that they could hardly keep their heads above water. |
| 34. | break water,
|
| 35. | by water, by ship or boat: to send goods by water. |
| 36. | dead in the water. dead (def. 41). |
| 37. | hold water,
|
| 38. | in deep water, in great distress or difficulty: Their marriage has been in deep water for some time. |
| 39. | in hot water. hot water. |
| 40. | like water, lavishly; abundantly; freely: The champagne flowed like water. |
| 41. | make one's mouth water, to excite a desire or appetite for something: The roasting turkey made our mouths water. |
| 42. | make water,
|
| 43. | tread water. tread (def. 23). |

water wa·ter (wô'tər)
n.
A clear, colorless, odorless, and tasteless liquid 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).
Any of the liquids that are present in or passed out of the body, such as urine, perspiration, tears, or saliva.
The fluid that surrounds a fetus in the uterus; amniotic fluid.
An aqueous solution of a substance, especially a gas.