American English

Definition of tube noun from the Oxford Advanced American Dictionary

      

    tube

     noun
    noun
    NAmE//tub//
     
     
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    pipe
  1. 1[countable] a long hollow pipe made of metal, plastic, rubber, etc., through which liquids or gases move from one place to another see also cathode ray tube, inner tube, test tube
  2. 2[countable] a hollow object in the shape of a pipe or tube a bike's inner tube the cardboard tube from the center of a toilet roll
  3. container
  4. 3[countable] tube (of something) a long narrow container made of soft metal or plastic, with a lid, used for holding thick liquids that can be squeezed out of it a tube of toothpaste
  5. part of body
  6. 4[countable] a part inside the body that is shaped like a tube and through which air, liquid, etc. passes bronchial tubes The esophagus is the tube leading from the throat to the stomach. see also fallopian tube
  7. television
  8. 5the tube [singular] (informal) the television
  9. in ear
  10. 6[countable] a small tube placed in a child's ear in order to drain liquid from it
  11. Idioms
    go down the tube/tubes (informal)
     
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    (of a plan, company, situation, etc.) to fail The education system is going down the tubes.
See the Oxford Advanced Learner's Dictionary entry: tube