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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“Tunnel.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/tunnel. Accessed 18 Apr. 2024.
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More from Merriam-Webster on tunnel
Nglish: Translation of tunnel for Spanish Speakers
Britannica English: Translation of tunnel for Arabic Speakers
Britannica.com: Encyclopedia article about tunnel
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