Tubing

noun
1.
material in the form of a tube:
glass tubing.
2.
tubes collectively.
3.
a piece of tube:
two feet of copper tubing.
4.
Also called inner-tubing. the sport or recreation of floating down a river or stream on an inner tube.
noun
1.
a hollow, usually cylindrical body of metal, glass, rubber, or other material, used especially for conveying or containing liquids or gases.
2.
a small, collapsible, cylinder of metal or plastic sealed at one end and having a capped opening at the other from which paint, toothpaste, or some other semifluid substance may be squeezed.
3.
Anatomy, Zoology. any hollow, cylindrical vessel or organ:
the bronchial tubes.
4.
Botany.

any hollow, elongated body or part.
the united lower portion of a gamopetalous corolla or a gamosepalous calyx.

5.
inner tube.
6.
Electronics. electron tube.
7.
Informal.

television.
a television set.

8.
mailing tube.
9.
the tubular tunnel in which an underground railroad runs.
10.
the railroad itself.
11.
Surfing Slang. the curled hollow formed on the underside of a cresting wave.
12.
British. subway (def 1).
13.
Australian Slang. a can of beer.
14.
Older Slang. a telescope.
verb (used with object), tubed, tubing.
15.
to furnish with a tube or tubes.
16.
to convey or enclose in a tube.
17.
to form into the shape of a tube; make tubular.
Idioms
18.
down the tube / tubes, Informal. into a ruined, wasted, or abandoned state or condition.
noun
1.
tubes collectively
2.
a length of tube
3.
a system of tubes
4.
fabric in the form of a tube, used for pillowcases and some cushions; piping
noun
1.
a long hollow and typically cylindrical object, used for the passage of fluids or as a container
2.
a collapsible cylindrical container of soft metal or plastic closed with a cap, used to hold viscous liquids or pastes
3.
(anatomy)

short for Eustachian tube, Fallopian tube
any hollow cylindrical structure

4.
(botany)

the lower part of a gamopetalous corolla or gamosepalous calyx, below the lobes
any other hollow structure in a plant

5.
(Brit) the tube

Also called the underground. an underground railway system US and Canadian equivalent subway
the tunnels through which the railway runs
the train itself
(capital) trademark the London underground railway system

6.
(electronics)

another name for valve (sense 3)
See electron tube, cathode-ray tube, television tube

7.
(slang) the tube, a television set
8.
(Brit, slang) a stupid or despicable person
9.
(Austral, slang) a bottle or can of beer
10.
(surfing) the cylindrical passage formed when a wave breaks and the crest tips forward
11.
an archaic word for telescope
verb (transitive)
12.
to fit or supply with a tube or tubes
13.
to carry or convey in a tube
14.
to shape like a tube

tube (tōōb, tyōōb)
n.

A hollow cylinder, especially one that conveys a fluid or functions as a passage.

An anatomical structure or organ having the shape or function of a tube; a duct.

see: down the tubes