tunnel

noun B2

Meaning

A tunnel is an underground or underwater passage that is typically used for transportation, such as for vehicles or trains, and can also serve various other purposes like utilities or water flow.
💡 A common mistake is to confuse "tunnel" with "channel," which refers to a body of water rather than a passage.

Example Sentences

How long does it take to build a tunnel ?
The engineers inspected the tunnel for structural integrity before reopening .
The tunnel under the river connects the two cities efficiently .

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