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Definition of tunnel

tunnel

/ˈtʌn.əl/
tun · nel

Plural:tunnels
•
Past Simple:tunneled
•
Past Participle:tunneled
•
Present Participle:tunneling
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tunnel Lexical Profile

tunnel Game Scores & Validity

• noun

1

An artificial underground passage, especially one built through a hill or under a road, river, or building.

Example

"The train sped through the dark tunnel beneath the mountain."


2

An underground passage dug by a burrowing animal.

Example

"The rabbits dug a complex network of tunnels under the garden to stay safe from predators."


3

A secure, encrypted connection established between two points on a computer network.

Example

"The IT department set up a virtual private network tunnel to safely transmit the sensitive financial data."

Synonyms
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Antonyms
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• verb

1

To dig or force a passage underground or through an obstacle.

Example

"The prisoners tunneled under the stone wall for months to make their escape."


2

To transmit data securely by encapsulating it within a different network protocol.

Example

"The software tunnels the local traffic through a proxy server to obscure the user's location."

Synonyms
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• Rhymes for tunnel

Word Origin & Etymology

From Middle French 'tonnelle', a diminutive of 'tonne' (cask or barrel), originally referring to a tubular net used for catching partridges. In the 15th century, the meaning extended to denote a subterranean passage due to the tubular shape.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Tunnel. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/tunnel
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