tunnel

Hole through mountain

A tunnel is a passage cut through or under an obstacle—earth, rock, or water.

Tunnels carry roads, railways, and utilities through mountains and beneath rivers.

Animals tunnel through soil.

To tunnel is to dig such a passage.

Figuratively, tunnel vision describes narrow focus that excludes peripheral awareness.

Light at the end of the tunnel suggests hope after difficulty.

passage

corridor

Enclosed connecting walkway

thoroughfare · route · access · conduit · entrance · exit · portal · opening · pathway · traverse

transport

railway

Track system for trains

  • subwayUnderground transit passage
  • metroUrban rail transit
  • trainRail vehicle or instruct

freight · transit · commute · locomotive · traffic · infrastructure · corridor · route · Chunnel · bore

burrow

mole

Subterranean insectivore

groundhog · prairie dog · earthworm · warren · den · hole · excavate · digging · underground · nest

mining

shaft

Narrow vertical passage

  • aditHorizontal mine opening
  • driftGradual movement, no direction
  • stopeUnderground ore excavation

crosscut · airway · ventilation · ore · seam · vein · extraction · coal · headframe · pithead

engineering

boring

Failing to engage interest

reinforcement · lining · segmental · cut-and-cover · TBM · shielding · ventilation · waterproofing · grouting · shotcrete

escape

prison

Confinement for offenders

getaway · elude · flee · POW · Alcatraz · dig · secret · hidden · covert · clandestine

claustrophobia

enclosed

Surrounded and sealed within

cramped · suffocating · anxiety · panic · trapped · airless · oppressive · dark · dread · fear

light

end

Final portion or cessation

emergence · breakthrough · optimism · journey · perseverance · relief · despair · struggle · patience · reward

vision

focus

Concentrated attention point

blindness · concentration · fixation · single-minded · obsession · myopic · blinkered · awareness · perception · sight

Categories
Opposites
spatial orientation

tunneltower

Tall slender edifice

spire · skyscraper · peak · summit · elevation

enclosure/openness

tunnelopen air

Unenclosed outdoor space

open road · clearing · plain · expanse · open field

structure type

tunnelbridge

Structure spanning an obstacle

overpass · viaduct · flyover · skyway · aqueduct

Phrases
Family

tunnels, tunneled, tunneling, tunnelled, tunnelling, tunnel vision, tunnellike, tunneler, tunnelers

Familiarity
Top 10,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G