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Word Explorer
Children's Dictionary
aquifer a layer of rock, sand, or gravel that contains water from which wells and springs are supplied.
asphalt a mixture of this substance with gravel or sand, used to pave roads. [1/2 definitions]
beach the land at the edge of a lake, ocean, or other body of water. A beach slopes gently toward the water and usually has sand or pebbles. [1/2 definitions]
bedrock the solid layer of rock in the earth's surface, found beneath soil, sand, or gravel.
concrete a hard, strong building material made by mixing sand, gravel, cement, and water. [1/3 definitions]
delta a triangle of sand and soil deposited at the mouth of some large rivers. [1/2 definitions]
dig to make a hole by removing dirt, sand, or the like. [1/6 definitions]
dune a mound or hill of sand built up by the action of wind.
footprint a mark pressed by a foot onto a surface, such as a step in wet sand or a print left by a muddy shoe.
gravel a loose mixture of small stones, pebbles, and sometimes sand.
grindstone a stone wheel that is turned to sharpen knives and tools, grind grain, or sand and shape items by rubbing or scraping.
grit tiny rough bits of sand or stone. [1/3 definitions]
hourglass an instrument used to measure time that sends sand through a narrow opening between two larger glass bulbs. It takes exactly one hour for the sand to pass from one bulb to the other.
mortar2 a material made from lime, sand, and water and used to hold bricks or stones in place.
pan to wash gravel or sand in a pan to remove gold or other precious metals. [1/4 definitions]
pearl a smooth, round gem that is formed inside the shells of oysters. A pearl forms to cover something, such as a grain of sand, that gets stuck in an oyster and irritates it.
plaster a paste of sand, lime, and water that becomes hard when it dries. Plaster is used to cover walls and ceilings. [1/3 definitions]
quicksand a deep, wet, mixture of sand and water. Quicksand pulls down and swallows up a person or thing that stands on it.
reef1 a ridge of rock, sand, or coral at or near the surface of ocean waters.
sand to cover with sand or something like sand. [1/3 definitions]
sandbar a ridge of sand in a river or near a shore. It is formed by the action of waves or currents.