as in cave
a passage that goes under the ground, through a hill, etc.
The train goes through a tunnel in the mountain. The moles dug tunnels in the yard.
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Recent Examples of tunnel
Zooming out interrupts the tunnel.
—
Angela Haupt, Time, 18 June 2026
In particular, a short tunnel section dubbed PrK, which connects the Russian Zvezda module to the station’s aft docking port, has been leaking air on and off since at least 2019, alarming officials.
—Victor Tangermann, Futurism, 18 June 2026
The grand jury cited a debate over the tunnel design as one example where staff failed to respond to requests in a timely manner.
—Grace Hase, Mercury News, 18 June 2026
Matteoli said the project is on track to begin construction by about 2031, with the tunnel potentially opening by 2038.
—Los Angeles Times, 18 June 2026
See All Example Sentences for tunnel
Angela Haupt, Time, 18 June 2026
In particular, a short tunnel section dubbed PrK, which connects the Russian Zvezda module to the station’s aft docking port, has been leaking air on and off since at least 2019, alarming officials.
—Victor Tangermann, Futurism, 18 June 2026
The grand jury cited a debate over the tunnel design as one example where staff failed to respond to requests in a timely manner.
—Grace Hase, Mercury News, 18 June 2026
Matteoli said the project is on track to begin construction by about 2031, with the tunnel potentially opening by 2038.
—Los Angeles Times, 18 June 2026
See All Example Sentences for tunnel
Recent Examples of Synonyms for tunnel
Noun
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And because the pellets were some 30 meters away from the cave’s entrance, the team could rule out their incineration by a natural wildfire.—
Sahas Mehra,
Scientific American,
19 June 2026
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Moaning Caverns and Calaveras cave tours Calaveras County's caverns offer guided underground tours, dramatic cave formations and a cooler alternative on hot summer days.—
CBS News,
CBS News,
18 June 2026
Noun
-
Moaning Caverns and Calaveras cave tours Calaveras County's caverns offer guided underground tours, dramatic cave formations and a cooler alternative on hot summer days.—
CBS News,
CBS News,
18 June 2026
-
The plan is to compress the green hydrogen gas and pump it deep underground for storage within custom-engineered, lined rock caverns.—
Mrigakshi Dixit,
Interesting Engineering,
17 June 2026
Noun
-
The city also detailed subway station closures, and nearly two dozen access points for the parade.—
ABC News,
ABC News,
17 June 2026
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Between hauling bags up subway stairs, weaving through Penn Station, and occasionally sprinting to the correct track, comfortable footwear is non-negotiable.—
Rosie Marder,
Travel + Leisure,
16 June 2026
Cite this Entry
“Tunnel.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/tunnel. Accessed 22 Jun. 2026.
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