A hollow cylinder, especially one that conveys a fluid or functions as a passage.
from The American Heritage Dictionary of the English Language, 4th Edition
A small flexible cylindrical container sealed at one end and having a screw cap at the other, for pigments, toothpaste, or other pastelike substances.
from The American Heritage Dictionary of the English Language, 4th Edition
A tunnel.
from The American Heritage Dictionary of the English Language, 4th Edition
An inflatable tube or cushion made of rubber or plastic and used for recreational riding, as behind a motor boat or down a snow-covered slope.
from The American Heritage Dictionary of the English Language, 4th Edition
An inner tube.
from The American Heritage Dictionary of the English Language, 4th Edition
verb-transitive
To place in or enclose in a tube.
from The American Heritage Dictionary of the English Language, 4th Edition
To provide with a tube; insert a tube in.
from The American Heritage Dictionary of the English Language, 4th Edition
verb-intransitive
To ride or float on an inflated tube for recreation.
from The American Heritage Dictionary of the English Language, 4th Edition
idiom
Tubes Slang Into a state of failure or ruin: saw her plans go down the tubes.
from The American Heritage Dictionary of the English Language, 4th Edition
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