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WordReference Random House Learner's Dictionary of American English © 2024tun•nel /ˈtʌnəl/USA pronunciation n., v., -neled, -nel•ing or ([esp. Brit.)] -nelled, -nel•ling. n. [countable] - Civil Engineeringan underground passage, esp. one for trains or automobiles:Planning was underway to build a tunnel under the English Channel.
v. - Civil Engineeringto make or dig out (a tunnel ) through or under (something): [~ + object]to tunnel one's way out of prison.[no object]to tunnel out of prison.
tun•nel•er, n. [countable] WordReference Random House Unabridged Dictionary of American English © 2024tun•nel (tun′l),USA pronunciation n., v., -neled, -nel•ing or (esp. Brit.) -nelled, -nel•ling. n. - Civil Engineeringan underground passage.
- Civil Engineeringa passageway, as for trains or automobiles, through or under an obstruction, as a city, mountain, river, harbor, or the like.
- Miningan approximately horizontal gallery or corridor in a mine.
- Zoologythe burrow of an animal.
- Slang Terms[Dial.]a funnel.
v.t. - Civil Engineeringto construct a passageway through or under:to tunnel a mountain.
- Civil Engineeringto make or excavate (a tunnel or underground passage):to tunnel a passage under a river.
- to move or proceed by or as if by boring a tunnel:The river tunneled its way through the mountain.
- Civil Engineeringto pierce or hollow out, as with tunnels.
v.i. - Civil Engineeringto make a tunnel or tunnels:to tunnel through the Alps.
- Middle French tonele, tonnelle funnel-shaped net, feminine of tonnel cask, diminutive of tonne tun; see -elle
- late Middle English tonel (noun, nominal) 1400–50
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