landfill
Americannoun
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landfills
plural
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a low area of land that is built up from deposits of solid refuse in layers covered by soil.
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the solid refuse itself.
verb (used without object)
verb (used with object)
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to make (an area of land) by means of a landfill.
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to use in a landfill.
to landfill millions of tons of garbage each year.
noun
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A disposal site where solid waste, such as paper, glass, and metal, is buried between layers of dirt and other materials in such a way as to reduce contamination of the surrounding land. Modern landfills are often lined with layers of absorbent material and sheets of plastic to keep pollutants from leaking into the soil and water.
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Also called sanitary landfill
Other Word Forms
Noun Inflected Forms
Etymology
Origin of landfill
Explanation
A landfill is a pit that is covered with dirt after being filled with waste of some kind. Some landfills are filled in with rocks for the specific purpose of raising the earth and building something on it. Garbage dumps are often called landfills, even when they're not literal pits that are filled and covered, and while "hole full of trash" might be your first thought when you hear the word, landfills are often simply a way of solidifying the ground for building. Many port cities, including Boston and Portland, Maine, have entire neighborhoods, once just areas covered in water, that were built on landfills.
Vocabulary lists containing landfill
East Asia - Middle School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
The $1.7-billion project included a stadium to be built on top of a former Carson landfill.
From Los Angeles Times ● Aug. 12, 2026
Bonus: Giving away unwanted stuff directly to neighbors made me feel better than sending it to a landfill.
From MarketWatch ● Aug. 11, 2026
But the chemicals take a long time to break down and have lingered in the environment, particularly in landfill, where they can leach into waterways and then into the sea.
From BBC ● Aug. 10, 2026
More than 30 people have been detained overall in connection with fires allegedly caused either deliberately or by negligence, including the mayor of the tourist island of Paros over a landfill fire last week.
From Barron's ● Aug. 4, 2026
They are ushered into waiting taxis and down VIP Road, past a colossal landfill and into the heart of North Calcutta.
From "The Namesake" by Jhumpa Lahiri
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And California recently enacted a law requiring retailers to manage how clothing waste is disposed of, in a bid to keep clothes from further bloating landfills.
From The Wall Street Journal ● Aug. 3, 2026
Other major sources include methane from livestock such as cattle, deforestation, industrial activity, and waste from sources including landfills.
From Science Daily ● Jul. 28, 2026
Without waste reduction at the source, ongoing sorting, and organic waste processing that can prevent methane gas from forming, there will always be the risk of environmental disasters occurring at landfills, he said.
From BBC ● Jul. 8, 2026
Signed into law in 2016, the state’s composting bill mandated a gradual increase in the amount of organic waste that must be diverted away from landfills.
From Los Angeles Times ● Jun. 24, 2026
Lou Volpe’s classroom, far from the main entrance, is furnished with old couches and living room chairs, donated stuff that otherwise might have gone to Goodwill or landfills.
From "Drama High" by Michael Sokolove
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.