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  1. TunnelBear: Secure VPN Service

    Discover something new, or tunnel back home to enjoy your favourite websites and apps while travelling or living abroad. Our global server network is optimized to let you surf and stream …

  2. Tunnel - Wikipedia

    It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and …

  3. Tunnels and underground excavations | History, Methods, Uses, …

    Dec 19, 2025 · Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock. Tunnels …

  4. TUNNEL Definition & Meaning - Merriam-Webster

    Jan 9, 2015 · The meaning of TUNNEL is a covered passageway; specifically : a horizontal passageway through or under an obstruction. How to use tunnel in a sentence.

  5. TUNNEL Definition & Meaning | Dictionary.com

    TUNNEL definition: an underground passage. See examples of tunnel used in a sentence.

  6. TUNNEL | English meaning - Cambridge Dictionary

    TUNNEL definition: 1. a long passage under or through the ground, especially one made by people: 2. the long passage…. Learn more.

  7. How Tunnels Work - HowStuffWorks

    Constructing a tunnel is one of the most complex challenges in the field of civil engineering. Learn about the basics behind tunnels.

  8. Tunnel: Components and Types of Tunnel. - gelogia.com

    Jul 31, 2025 · A tunnel is a horizontal or slightly inclined underground passage. Learn about the definition, components, and types of tunnels, including hydraulic and traffic tunnels.

  9. Downtown Tunnels | Experience | Downtown Houston

    Downtown's "underground" is a system of tunnels 20 feet below Houston's Downtown streets and more than six miles long. Starting in the 1930s as a tunnel between two movie theaters, today …

  10. TUNNEL definition in American English | Collins English Dictionary

    A tunnel is a long passage which has been made under the ground, usually through a hill or under the sea. Boston drivers love the tunnel.