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English definition of “tube”

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tube

noun
 
 
/tjuːb/
PIPE [C] B2 a pipe made of glass, plastic, metal, etc, especially for liquids or gases to flow throughPlumbing and pipes and sewage
CONTAINER [C] B1 a long, thin container for a soft substance, that you press to get the substance out: a tube of toothpasteContainers for liquids and gases
the Tube B1 the system of railways under the ground in London: I got the Tube to Oxford Circus. →  See also test tube Railways and railway lines
(Definition of tube from the Cambridge Learners Dictionary © Cambridge University Press)
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