as in caves
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 tunnels
Traverse down glowing light tunnels to synchronized Christmas music.
—
Caroline Ritzie, Cincinnati Enquirer, 12 Nov. 2025
Why can't people condemn putting tunnels under hospitals and embedding themselves in where civilians are?
—Scott Detrow, NPR, 11 Nov. 2025
These spirit tunnels can go viral but also be very awkward.
—Andy Hoglund, Entertainment Weekly, 9 Nov. 2025
The methodology, called deep borehole disposal, is achieved by drilling 18-inch vertical tunnels thousands of feet below ground, then turning horizontal.
—Bob Woods, CNBC, 9 Nov. 2025
The idea for Boring is to eliminate traffic by digging tunnels below cities that can shuttle passengers with autonomous Teslas.
—Dave Smith, Fortune, 8 Nov. 2025
Pore space creates essential tunnels for nutrients, water, and oxygen to move in the soil, further fortifying the roots and boosting plant growth.
—Megan Hughes, Better Homes & Gardens, 8 Nov. 2025
Goldin’s remains, according to two Israeli sources, are likely held in Rafah in southern Gaza near an area where up to 200 Hamas militants are hiding in underground tunnels in territory occupied by Israeli forces.
—Oren Liebermann, CNN Money, 7 Nov. 2025
Horton told Architectural Digest that some interior shots were also filmed at the hospital, including the interns' tunnels in the pilot episode and the iconic airbridge.
—Emily Blackwood, PEOPLE, 6 Nov. 2025
Caroline Ritzie, Cincinnati Enquirer, 12 Nov. 2025
Why can't people condemn putting tunnels under hospitals and embedding themselves in where civilians are?
—Scott Detrow, NPR, 11 Nov. 2025
These spirit tunnels can go viral but also be very awkward.
—Andy Hoglund, Entertainment Weekly, 9 Nov. 2025
The methodology, called deep borehole disposal, is achieved by drilling 18-inch vertical tunnels thousands of feet below ground, then turning horizontal.
—Bob Woods, CNBC, 9 Nov. 2025
The idea for Boring is to eliminate traffic by digging tunnels below cities that can shuttle passengers with autonomous Teslas.
—Dave Smith, Fortune, 8 Nov. 2025
Pore space creates essential tunnels for nutrients, water, and oxygen to move in the soil, further fortifying the roots and boosting plant growth.
—Megan Hughes, Better Homes & Gardens, 8 Nov. 2025
Goldin’s remains, according to two Israeli sources, are likely held in Rafah in southern Gaza near an area where up to 200 Hamas militants are hiding in underground tunnels in territory occupied by Israeli forces.
—Oren Liebermann, CNN Money, 7 Nov. 2025
Horton told Architectural Digest that some interior shots were also filmed at the hospital, including the interns' tunnels in the pilot episode and the iconic airbridge.
—Emily Blackwood, PEOPLE, 6 Nov. 2025
Recent Examples of Synonyms for tunnels
Noun
-
In the 1930s, amid fears the palace collection would be seized by Japan’s Imperial Army, many of the treasures were evacuated to other cities and spent years on the road, sometimes hidden in temples and caves on the way.—
Wayne Chang,
CNN Money,
10 Nov. 2025
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The study reveals as urbanization increasingly encroaches upon bat-safe caves, invasive, city-dwelling rats are likely to follow.—
NPR,
NPR,
8 Nov. 2025
Noun
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The town of about 600 sits at the northern foothills of the Smoky Mountains and offers hiking, caverns and Silver Falls, the tallest subterranean cascade in the eastern United States, according to World Atlas.—
Craig Shoup,
Nashville Tennessean,
9 Nov. 2025
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Other locations that inspire quiet immersion include the cenotes of Mexico, where sunlight filters through ancient limestone caverns, and the tranquil waters of Amed, Bali, a favorite of free-divers.—
Vanita Salisbury,
AFAR Media,
6 Nov. 2025
Cite this Entry
“Tunnels.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/tunnels. Accessed 18 Nov. 2025.
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