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tube

 
 
/tjuːb/ noun

Definition

PIPE [C] a pipe made of glass, plastic, metal, etc, especially for liquids or gases to flow through
CONTAINER [C] a long, thin container for a soft substance, that you press to get the substance out: a tube of toothpaste
the Tube the system of railways under the ground in London: I got the Tube to Oxford Circus. → See also test tube
(Definition of tube noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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