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Meaning of “tube” - Learner’s Dictionary

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 Learner’s Dictionary © Cambridge University Press)
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