- tube [to͞ob, tyo͞ob]n.[Fr < L tubus, a pipe]1.a) a hollow cylinder or pipe of metal, glass, rubber, etc., usually long in proportion to its diameter, used for conveying fluids, etc.b) an instrument, part, organ, etc. resembling a tube [bronchial tubes, eustachian tubes]c) a fallopian tube: usually used in pl.2. a rubber casing inflated with air and used, esp. formerly, with an outer casing to form an automotive tire3. a cylindrical container made of thin, pliable metal, plastic, etc., fitted at one end with a screw cap, and used for holding pastes or semiliquids, which can be squeezed out☆ 4. short for:a) ELECTRON TUBEb) VACUUM TUBE5.a) a tubular tunnel for a railroad, subway, etc.b) Brit. an underground electric railway; subway6. Bot. the lower, united part of a gamopetalous corolla or a gamosepalous calyx7. Elec. the tubular space bounded by the lines of electric or magnetic force passing through every point on a closed curve on the outside of a charged body: in full tube of flux or tube of forcevt.tubed, tubing1. to provide with, place in, or pass through a tube or tubes2. to make tubular——————down the tube or down the tubesInformal in or into a condition of failure, defeat, etc.——————☆ the tubeInformal televisiontubelikeadj.
English World dictionary. V. Neufeldt. 2014.