a low area that has been filled in
"After years of being used as a landfill, the old quarry had become a quiet, green park."
A site at which refuse is buried under layers of earth.
"The city plans to expand its existing landfill by covering more waste with fresh soil today."
In plain English: A landfill is a large hole dug into the ground where trash and garbage are buried until they rot away.
"The city plans to build a new landfill in an unused valley next month."
To dispose of (garbage) by burying it at a landfill site.
"The city decided to stop burning its trash and instead landfilled all waste in the new valley site."
In plain English: To landfill means to dump trash into a large hole where it will stay buried underground until nature breaks it down over time.
"The city council decided to landfill the old quarry rather than build a new park there."
Usage: Use the verb form to describe the act of disposing of waste in an underground facility, such as "The city plans to landfill old tires." Avoid using this term for general trash collection or recycling processes that do not involve burial.
The word landfill is a straightforward compound formed from the words land and fill. It was first used to describe a site where waste material is deposited on the ground and covered with soil or other materials.