a long, hollow cylinder used for conveying or holding liquids or gases.
▸a long flexible metal or plastic container sealed at one end and with a cap at the other.
▸material forming tubes.
Anatomy, Zoology, & Botany a hollow cylindrical organ or structure in an animal or plant.
▸
(tubes)
informal a woman's Fallopian tubes.
(the Tube)
Brit.trademark the underground railway system in London.
▸a train running on this system.
a sealed container, typically of glass and either evacuated or filled with gas, containing two electrodes between which an electric current can be made to flow.
▸a cathode ray tube, especially in a television set.
▸N. Amer. a thermionic valve.
(the tube)
N. Amer.informal television.
(in surfing) the hollow curve under the crest of a breaking wave.
informal a cigarette.
Austral.informal a can of beer.
v.
[usu. as adj.tubed]
provide with a tube or tubes.
convey in a tube.
Phrase
go down the tube
(or tubes)
informal be completely lost or wasted; fail utterly.