Definition of “tube” - English Dictionary

“tube” in British English

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tubenoun

uk /tʃuːb/ us /tuːb/

tube noun (PIPE)

B2 [ C ] a long cylinder made from plastic, metal, rubber, or glass, especially used for moving or containing liquids or gases:

Gases produced in the reaction pass through this tube and can then be collected.

[ C ] in biology, any hollow, cylinder-shaped structure in the body that carries air or liquid:

the bronchial tubes

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tube noun (CONTAINER)

B1 [ C ] a long, thin container made of soft metal or plastic that is closed at one end and has a small hole at the other, usually with a cover, used for storing thick liquids:

a tube of toothpaste

[ C ] Australian English informal for a can or bottle of beer:

a tube of lager

(Definition of “tube” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“tube” in American English

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tubenoun

us /tub/

tube noun (PIPE)

[ C ] a long, hollow cylinder of plastic, metal, rubber, or glass, used for moving or containing liquids or gases:

a copper tube
She lay in the hospital, tubes going in and out of her.

[ C ] A tube is also one of the body’s hollow cylindrical structures that carries air or liquid:

bronchial tubes

tube noun (CONTAINER)

[ C ] a cylindrical container made of soft metal or plastic which is closed at one end and has a small opening at the other, usually with a cover, and is used for holding thick liquids:

tube noun (TELEVISION)

[ U ] infml television:

What’s on the tube tonight?

(Definition of “tube” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“the tube” in Business English

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the tubenoun [ S ]

also the Tube uk us UK informal TRANSPORT

the London Underground: the system of trains that run under the ground there:

Let's get the tube.
It's quickest to go by tube.
We decided to meet at Oxford Street tube station.
go down the tubes informal

to fail completely:

If sales don't get better soon, the company will go down the tubes.

(Definition of “the tube” from the Cambridge Business English Dictionary © Cambridge University Press)