Etymology : French, from Latin tubus; akin to Latin tuba trumpet
Pronunciation : tüb, tyüb
Function : noun
Date : 1651
1. hollow cylinder; elongated hollow object; pipette, pipe; tunnel; subway, metro (British). tube\tube\ , n. (elec. railways) a tunnel for a tube railway; also (colloq.), a tube railway. [chiefly eng.]tube \tube\ , n. [l. tubus; akin to tuba a trumpet: cf f. tube.].
2. a hollow cylinder, of any material, used for the conveyance of fluids, and for various other purposes; a pipe.
3. a telescope. "glazed optic tube.".
4. a vessel in animal bodies or plants, which conveys a fluid or other substance.
5. (bot.) the narrow, hollow part of a gamopetalous corolla.
6. (gun.) a priming tube, or friction primer. see:
under priming, and friction.
7. (steam boilers) a small pipe forming part of the boiler, containing water and surrounded by flame or hot gases, or else surrounded by water and forming a flue for the gases to pass through.
8. (zo?l.) (a) a more or less cylindrical, and often spiral, case secreted or constructed by many annelids, crustaceans, insects, and other animals, for protection or concealment. see:
illust. of tubeworm. (b) one of the siphons of a bivalve mollusk.
9. A hollow cylinder, of any material, used for the conveyance of fluids, and for various other purposes; a pipe.
10. A telescope.
11. A vessel in animal bodies or plants, which conveys a fluid or other substance.
12. The narrow, hollow part of a gamopetalous corolla.
13. A priming tube, or friction primer.
14. See under Priming, and Friction.
15. A small pipe forming part of the boiler, containing water and surrounded by flame or hot gases, or else surrounded by water and forming a flue for the gases to pass through.
16. A more or less cylindrical, and often spiral, case secreted or constructed by many annelids, crustaceans, insects, and other animals, for protection or concealment.
17. See Illust. of Tubeworm.
18. One of the siphons of a bivalve mollusk.
19. To furnish with a tube; as, to tube a well.
20. A tunnel for a tube railway; also , a tube railway. conduit consisting of a long hollow object used to hold and conduct objects or liquids or gases electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope any hollow cylindrical body structure place or enclose in a tube ride or float on an inflated tube; "We tubed down the river on a hot summer day" convey in a tube; "inside Paris, they used to tube mail" provide with a tube or insert a tube into.
21. 1. A tube is a long hollow object that is usually round, like a pipe. He is fed by a tube that enters his nose. a cardboard tube.
22. A tube of something such as paste is a long, thin container which you squeeze in order to force the paste out. a tube of toothpaste. a small tube of moisturizer.
23. Some long, thin, hollow parts in your body are referred to as tubes. The lungs are in fact constructed of thousands of tiny tubes.
24. The tube is the underground railway system in London. I took the tube then the train and came straight here.
25. You can refer to the television as the tube. The only baseball he saw was on the tube. = TV.
26. If a business, economy, or institution goes down the tubes or goes down the tube, it fails or collapses completely. The country was going down the tubes economically see also:
bronchial tube, cathode-ray tube, fallopian tube, inner tube, test tube. to float on a river on a large inner tube for fun. cathode ray tube test tube conception neural tube defect pitot tube tube worm vacuum tube venturi tube.