Down the tubes

What is Down the tubes?

Down the tubes definition and meaning on Dictionary terms:
noun
a hollow, usually cylindrical body of metal, glass, rubber, or other material, used especially for conveying or containing liquids or gases.
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.
Anatomy, Zoology. any hollow, cylindrical vessel or organ: the bronchial tubes.
Botany. any hollow, elongated body or part.the united lower portion of a gamopetalous corolla or a gamosepalous calyx.

inner tube.
Electronics. electron tube.
Informal. television.a television set.

mailing tube.
the tubular tunnel in which an underground railroad runs.
the railroad itself.
Surfing Slang. the curled hollow formed on the underside of a cresting wave.
British. subway(def 1).
Australian Slang. a can of beer.
Older Slang. a telescope.

verb (used with object), tubed, tub

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