tube - definition in the American English Dictionary - Cambridge Dictionaries Online

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English definition of “tube”

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tube

noun  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: a tube of toothpaste/ointment

tube noun (TELEVISION)

[U] infml television: What’s on the tube tonight?
(Definition of tube from the Cambridge Academic Content Dictionary © Cambridge University Press)
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