- a long, hollow cylinder of metal, plastic, glass, etc. for holding or transporting something, chiefly liquids or gases；the inner tube of a bicycle tire.
- fit (a person or animal) with a tube to assist breathing, especially after a laryngotomy.；convey in a tube
verb: tube, 3rd person present: tubes, gerund or present participle: tubing, past tense: tubed, past participle: tubed
noun: tube, plural noun: tubes
- 1. a long, hollow cylinder of metal, plastic, glass, etc. for holding or transporting something, chiefly liquids or gases a plastic tube is connected to the tap and the beer is ready to be pulled
- ▪ the inner tube of a bicycle tire.
- ▪ material made into cylindrical form; tubing the firm manufactures steel tube for a wide variety of applications
- 2. a thing in the form of or resembling a tube.
- ▪ a flexible metal or plastic container sealed at one end and having a screw cap at the other, for holding a semiliquid substance ready for use a tube of toothpaste
- ▪ a rigid cylindrical container a tube of lipstick
- ▪ a hollow cylindrical organ or structure in an animal body or in a plant Eustachian tube sieve tube
- ▪ informal a woman's fallopian tubes women with blocked tubes
- ▪ a woman's close-fitting garment, typically without darts or other tailoring and made from a single piece of knitted or elasticized fabric a tube skirt
- ▪ (in surfing) the hollow curve under the crest of a breaking wave he angled his board to get in the tube
- 3. trademark in UK the subway system in London a cross-London trek on the Tube a Tube train
- ▪ a train running on the subway system in London I caught the Tube home
- 4. 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 color tubes for portables
- ▪ North American informal television another wasted evening, sitting in front of the tube
- ▪ North American a vacuum tube.
- 1. informal fit (a person or animal) with a tube to assist breathing, especially after a laryngotomy.
- 2. convey in a tube the wells were flooded, and this water, tubed off, yielded a supply of 38,000 gallons per hour
- 3. ride on water on a large inflated inner tube we tubed down creeks, slid down water cascades, and fished in canyons