a hollow elongated flexible or rigid cylinder, esp one that conveys liquids or gases
a slender channel within a plant or animal body; a duct
the bronchial tubes
informal (in pl) the Fallopian tubes
a small cylindrical container of soft metal or plastic sealed at one end and fitted with a cap at the other, from which a paste or other semisolid substance is dispensed by squeezing
(the tube) Brit, informal the underground railway in London
Brit, informal
(the tube) an underground railway running through deep tunnels, esp the one in London
a train running on an underground railway
an electron tube
chiefly NAmer a thermionic valve
a cathode-ray tube, e.g. of a television set
(the tube) NAmer, informal television
in surfing, a rounded hollow formed under the crest of a large breaking wave
informal a cigarette
Aus, informal a can of beer
informal said of a business, project, etc: to fail or be completely lost or wasted