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
Pets, livestock, and freight regularly travel through the tunnel.
—
Encyclopedia Britannica, 30 Apr. 2026
While Breer’s team was quietly refining its design through painstaking engineering and wind-tunnel trials, another man was moving even faster.
—Bill Gourgey, Popular Science, 29 Apr. 2026
After all, there is always light at the end of the proverbial tunnel.
—Ed Silverman, STAT, 29 Apr. 2026
The military also shared video purporting to show the insides of the tunnels.
—Mustafa Qadri, CNN Money, 28 Apr. 2026
See All Example Sentences for tunnel
Encyclopedia Britannica, 30 Apr. 2026
While Breer’s team was quietly refining its design through painstaking engineering and wind-tunnel trials, another man was moving even faster.
—Bill Gourgey, Popular Science, 29 Apr. 2026
After all, there is always light at the end of the proverbial tunnel.
—Ed Silverman, STAT, 29 Apr. 2026
The military also shared video purporting to show the insides of the tunnels.
—Mustafa Qadri, CNN Money, 28 Apr. 2026
See All Example Sentences for tunnel
Recent Examples of Synonyms for tunnel
Noun
-
Guests looking to escape the hustle of life are surrounded by 60 acres of redwood forests, with ocean views, caves, waterfalls, and hiking trails among it all.—
Erika Owen,
Architectural Digest,
1 May 2026
-
Around the same period, our ancestors began to more frequently occupy rock shelters and caves.—
Literary Hub,
Literary Hub,
1 May 2026
Noun
-
Fire made the inhospitable conditions of caves more bearable, as caverns were often cold, dark, damp, and home to other residents like lions, bears, and hyenas, which had to be displaced.—
Literary Hub,
Literary Hub,
1 May 2026
-
Back at Big Thunder, there will be other fresh surprises, including 2,000 bats added in the approach to the ride’s rainbow caverns.—
Dewayne Bevil,
The Orlando Sentinel,
30 Apr. 2026
Noun
-
The style is efficient, comfortable, and offers instant peace of mind in crowded markets, packed subway cars, and busy plazas.—
Rosie Marder,
Travel + Leisure,
29 Apr. 2026
-
On Singapore’s subway, called the MRT, announcements are sometimes made in as many as four languages; on Hong Kong’s subway, called the MTR, announcements are made in three.—
Literary Hub,
Literary Hub,
29 Apr. 2026
Cite this Entry
“Tunnel.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/tunnel. Accessed 4 May. 2026.
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