Underground
Below the surface of the earth; below ground.
Explanation
Technical Meaning: Located or occurring beneath the surface of the ground, often referring to structures, utilities, or spaces. It refers to anything situated beneath the Earth’s surface, including structures, utilities, or spaces that are built or installed below ground level. Common examples include subway tunnels, sewer systems, and basements in buildings.
Simple Meaning: Anything that is below the ground level or buried. When we say something is “underground,” it means it’s hidden or placed below the ground. This can include things like subway systems, pipes, or even the lower floor of a building.
Definition in One Word: Subterranean