To supply with, or enclose in, a tube.
She tubes lipstick in the cosmetics factory.
To ride an inner tube.
They tubed down the Colorado River.
To intubate.
The patient was tubed.
Tubes, considered as a group
A length of tube, or a system of tubes
The recreation of riding down a river on an inner tube
The recreation of tobogganing down a snowy slope or toboggan run on an inner tube