noun Also called sanitary landfill.
a low area of land that is built up from deposits of solid refuse in layers covered by soil.
the solid refuse itself.
verb (used without object)
to create more usable land by this means.
verb (used with object)
to make (an area of land) by means of a landfill.
to use in a landfill: to landfill millions of tons of garbage each year.

1940–45, Americanism; land + fill Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
landfill (ˈlændˌfɪl)
a.  disposal of waste material by burying it under layers of earth
 b.  (as modifier): landfill sites

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1942, from land (n.) + fill. A euphemism for dump.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
landfill   (lānd'fĭl')  Pronunciation Key 
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. Also called sanitary landfill.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
They say we're not about to run out of landfill space and that recycling paper
  keeps forests from being replanted with new trees.
Indeed, plenty of people suspect that lorry-loads of stuff collected for
  recycling end up in landfill instead.
Most e-scrap still ends up as landfill, wasting resources and posing risks to
  health and the environment.
That's why the pickers are really important to the landfill, because they help
  increase its capacity.
Image for landfill
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