| catchment area | | |
| n. (location) | 1. basin, catchment area, catchment basin, drainage area, drainage basin, river basin, watershed | the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet.; "flood control in the Missouri basin" |
| ~ detention basin | a storage site (such as a small reservoir) that delays the flow of water downstream. |
| ~ retention basin | a storage site similar to a detention basin but the water in storage is permanently obstructed from flowing downstream. |
| ~ geographic area, geographic region, geographical area, geographical region | a demarcated area of the Earth. |
| watershed | | |
| n. (location) | 1. divide, water parting, watershed | a ridge of land that separates two adjacent river systems. |
| ~ line | a spatial location defined by a real or imaginary unidimensional extent. |
| ~ continental divide | the watershed of a continent (especially the watershed of North America formed by a series of mountain ridges extending from Alaska to Mexico). |
| ~ great divide | that part of the continental divide formed by the Rocky Mountains in the United States. |
| n. (event) | 2. landmark, turning point, watershed | an event marking a unique or important historical change of course or one on which important developments depend.; "the agreement was a watershed in the history of both nations" |
| ~ juncture, occasion | an event that occurs at a critical time.; "at such junctures he always had an impulse to leave"; "it was needed only on special occasions" |
| ~ fall of man | (Judeo-Christian mythology) when Adam and Eve ate of the fruit of the tree of knowledge of good and evil in the Garden of Eden, God punished them by driving them out of the Garden of Eden and into the world where they would be subject to sickness and pain and eventual death. |
| ~ road to damascus | a sudden turning point in a person's life (similar to the sudden conversion of the Apostle Paul on the road from Jerusalem to Damascus of arrest Christians). |
| water | | |
| n. (substance) | 1. h2o, water | binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent. |
| ~ tear, teardrop | a drop of the clear salty saline solution secreted by the lacrimal glands.; "his story brought tears to her eyes" |
| ~ perspiration, sudor, sweat | salty fluid secreted by sweat glands.; "sweat poured off his brow" |
| ~ tap water | water directly from the spigot. |
| ~ body of water, water | the part of the earth's surface covered with water (such as a river or lake or ocean).; "they invaded our territorial waters"; "they were sitting by the water's edge" |
| ~ flake, snowflake | a crystal of snow. |
| ~ diamond dust, frost mist, frost snow, ice crystal, ice needle, poudrin, snow mist | small crystals of ice. |
| ~ binary compound | chemical compound composed of only two elements. |
| ~ atomic number 1, h, hydrogen | a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe. |
| ~ atomic number 8, o, oxygen | a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust. |
| ~ bath water | water used for a bath. |
| ~ dishwater | water in which dishes and cooking utensils are washed. |
| ~ distilled water | water that has been purified by distillation. |
| ~ holy water | water that has been blessed by a priest for use in symbolic purification. |
| ~ ground water, spring water, well water | underground water that is held in the soil and in pervious rocks. |
| ~ hard water | water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap. |
| ~ ice, water ice | water frozen in the solid state.; "Americans like ice in their drinks" |
| ~ limewater | solution of calcium hydroxide in water used as an antacid. |
| ~ liquid | fluid matter having no fixed shape but a fixed volume. |
| ~ meltwater | melted snow or ice. |
| ~ brine, saltwater, seawater | water containing salts.; "the water in the ocean is all saltwater" |
| ~ fresh water, freshwater | water that is not salty. |
| ~ slush | partially melted snow. |
| ~ soft water | water that is not hard (does not contain mineral salts that interfere with the formation of lather with soap). |
| ~ bilge, bilge water | water accumulated in the bilge of a ship. |
| ~ water of crystallisation, water of crystallization, water of hydration | the water present in hydrated compounds. |
| n. (object) | 2. body of water, water | the part of the earth's surface covered with water (such as a river or lake or ocean).; "they invaded our territorial waters"; "they were sitting by the water's edge" |
| ~ thing | a separate and self-contained entity. |
| ~ backwater | a body of water that was created by a flood or tide or by being held or forced back by a dam.; "the bayous and backwaters are breeding grounds for mosquitos" |
| ~ bay, embayment | an indentation of a shoreline larger than a cove but smaller than a gulf. |
| ~ channel | a deep and relatively narrow body of water (as in a river or a harbor or a strait linking two larger bodies) that allows the best passage for vessels.; "the ship went aground in the channel" |
| ~ drink | any large deep body of water.; "he jumped into the drink and had to be rescued" |
| ~ estuary | the wide part of a river where it nears the sea; fresh and salt water mix. |
| ~ flowage | a body of water that has been created by deliberately flooding an area.; "many campsites were located near the flowage" |
| ~ crossing, ford | a shallow area in a stream that can be forded. |
| ~ gulf | an arm of a sea or ocean partly enclosed by land; larger than a bay. |
| ~ high sea, international waters | the open seas of the world outside the territorial waters of any nation. |
| ~ hydrosphere | the watery layer of the earth's surface; includes water vapor. |
| ~ inlet, recess | an arm off of a larger body of water (often between rocky headlands). |
| ~ lake | a body of (usually fresh) water surrounded by land. |
| ~ lake | a body of (usually fresh) water surrounded by land. |
| ~ briny, main | any very large body of (salt) water. |
| ~ mid-water | the water that is well below the surface but also well above the bottom.; "many marine fishes inhabit the mid-waters" |
| ~ ocean | a large body of water constituting a principal part of the hydrosphere. |
| ~ ocean | a large body of water constituting a principal part of the hydrosphere. |
| ~ offing | the part of the sea that can be seen from the shore and is beyond the anchoring area.; "there was a ship in the offing" |
| ~ polynya | a stretch of open water surrounded by ice (especially in Arctic seas). |
| ~ puddle, pool | a small body of standing water (rainwater) or other liquid.; "there were puddles of muddy water in the road after the rain"; "the body lay in a pool of blood" |
| ~ river | a large natural stream of water (larger than a creek).; "the river was navigable for 50 miles" |
| ~ sea | a division of an ocean or a large body of salt water partially enclosed by land. |
| ~ seven seas | an informal expression for all of the oceans of the world.; "the old salt had sailed the seven seas" |
| ~ shallow, shoal | a stretch of shallow water. |
| ~ sound | a large ocean inlet or deep bay.; "the main body of the sound ran parallel to the coast" |
| ~ stream, watercourse | a natural body of running water flowing on or under the earth. |
| ~ earth's surface, surface | the outermost level of the land or sea.; "earthquakes originate far below the surface"; "three quarters of the Earth's surface is covered by water" |
| ~ territorial waters | the waters surrounding a nation and its territories over which that nation exercises sovereign jurisdiction. |
| ~ waterfall, falls | a steep descent of the water of a river. |
| ~ waterway | a navigable body of water. |
| ~ h2o, water | binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent. |
| n. (substance) | 3. water | once thought to be one of four elements composing the universe (Empedocles). |
| ~ archaicism, archaism | the use of an archaic expression. |
| ~ element | one of four substances thought in ancient and medieval cosmology to constitute the physical universe.; "the alchemists believed that there were four elements" |
| n. (artifact) | 4. water, water supply, water system | a facility that provides a source of water.; "the town debated the purification of the water supply"; "first you have to cut off the water" |
| ~ facility, installation | a building or place that provides a particular service or is used for a particular industry.; "the assembly plant is an enormous facility" |
| ~ infrastructure, base | the stock of basic facilities and capital equipment needed for the functioning of a country or area.; "the industrial base of Japan" |
| ~ artificial lake, man-made lake, reservoir | lake used to store water for community use. |
| ~ water main | main (a pipe or conduit) for conveying water. |
| n. (substance) | 5. pee, piddle, piss, urine, water, weewee | liquid excretory product.; "there was blood in his urine"; "the child had to make water" |
| ~ body waste, excrement, excreta, excretory product, excretion | waste matter (as urine or sweat but especially feces) discharged from the body. |
| n. (food) | 6. water | a liquid necessary for the life of most animals and plants.; "he asked for a drink of water" |
| ~ food, nutrient | any substance that can be metabolized by an animal to give energy and build tissue. |
| ~ nutrient | any substance (such as a chemical element or inorganic compound) that can be taken in by a green plant and used in organic synthesis. |
| ~ branch water | pure natural water from a stream or brook; often distinguished from soda water. |
| ~ spring water | water from a spring. |
| ~ drinking water | water suitable for drinking. |
| ~ liquid | a substance that is liquid at room temperature and pressure. |
| v. (change) | 7. irrigate, water | supply with water, as with channels or ditches or streams.; "Water the fields" |
| ~ wet | cause to become wet.; "Wet your face" |
| ~ hose, hose down | water with a hose.; "hose the lawn" |
| ~ flush | cause to flow or flood with or as if with water.; "flush the meadows" |
| ~ hush | run water over the ground to erode (soil), revealing the underlying strata and valuable minerals. |
| v. (possession) | 8. water | provide with water.; "We watered the buffalo" |
| ~ furnish, provide, supply, render | give something useful or necessary to.; "We provided the room with an electrical heater" |
| v. (body) | 9. water | secrete or form water, as tears or saliva.; "My mouth watered at the prospect of a good dinner"; "His eyes watered" |
| ~ secrete, release | generate and separate from cells or bodily fluids.; "secrete digestive juices"; "release a hormone into the blood stream" |
| v. (change) | 10. water | fill with tears.; "His eyes were watering" |
| ~ fill, fill up | become full.; "The pool slowly filled with water"; "The theater filled up slowly" |
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