noun an underground passageway, typically through a hill or under a building, road, or river
verb No applicable parts of speech
adjective No applicable parts of speech
adverb No applicable parts of speech
pronoun No applicable parts of speech
preposition No applicable parts of speech
conjunction No applicable parts of speech
interjection No applicable parts of speech
article No applicable parts of speech
In military contexts, tunnels can be used for clandestine movement of troops or supplies, as well as for defensive purposes.
In urban planning, tunnels are sometimes used to alleviate traffic congestion by providing alternative routes for vehicles through densely populated areas.
In civil engineering, a tunnel is an underground passageway constructed beneath the earth's surface, typically for transportation purposes.
In geology, a tunnel is a natural underground passage formed by geological processes such as erosion or lava flow.
In transportation, a tunnel is a structure built to allow vehicles or pedestrians to pass through an obstacle such as a mountain or body of water.
In mining, a tunnel is a horizontal passageway dug into the earth to access mineral deposits or provide ventilation.
In a literary context, 'tunnel' can be used metaphorically to represent a journey or passage through a difficult or challenging situation.
A psychologist may use the concept of a 'tunnel' to describe the process of working through issues or emotions with a client, with the idea that there is light at the end of the tunnel.
Engineers may refer to underground passageways as tunnels, and they are responsible for designing and constructing tunnels for various purposes such as transportation or utilities.
Geologists may study natural tunnels formed by geological processes, such as caves or lava tubes, to understand the earth's history and structure.
Urban planners may consider tunnels as part of transportation infrastructure projects, such as subway systems or underground roadways, to improve traffic flow in cities.