tunnel Definition in the Cambridge English Dictionary
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Definition of “tunnel” - English Dictionary

Definition of "tunnel" - American English Dictionary

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tunnelnoun [C]

 us   /ˈtʌn·əl/
a ​longpassage under or through the ​earth, esp. one made for ​vehicles: The ​trainentered the tunnel.

tunnelverb [I/T]

 us   /ˈtʌn·əl/ (-l-, -ll-)
to ​dig a tunnel: [I] Earthworms ​digestorganicmatter as they tunnel. [T] The ​people trapped in the ​collapsedbuilding had to tunnel ​their way out.
(Definition of tunnel from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "tunnel" - British English Dictionary

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tunnelnoun [C]

uk   us   /ˈtʌn.əl/
B1 a ​longpassage under or through the ​ground, ​especially one made by ​people: The ​train went into the tunnel.the tunnel the ​longpassage through which ​football, rugby etc. ​playerswalk to get to the ​pitch
More examples

tunnelverb [I or T]

uk   us   /ˈtʌn.əl/ (-ll- or US usually -l-)
to ​dig a tunnel: The ​decision has not ​yet been made whether to tunnel under the ​river or ​build a ​bridge over it. The ​alternative is to tunnel a ​route through the ​mountain. He was ​trapped in a ​collapsedbuilding but ​managed to tunnel his way out.
tunneller
noun [C] UK (US tunneler) uk   /r/  us   //
(Definition of tunnel from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
Translations of “tunnel”
in Korean 터널…
in Arabic نَفَق…
in Malaysian terowong…
in French tunnel…
in Russian тоннель…
in Chinese (Traditional) 隧道, 地道, 坑道…
in Italian galleria, tunnel…
in Turkish tünel…
in Polish tunel…
in Spanish túnel…
in Vietnamese đường hầm…
in Portuguese túnel…
in Thai อุโมงค์…
in German der Tunnel…
in Catalan túnel…
in Japanese トンネル…
in Chinese (Simplified) 隧道, 地道, 坑道…
in Indonesian terowongan…
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