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Longman Dictionary of Contemporary English
inner tube
▪ Cut a 5/8in wide band of bicycle inner tube.
▪ The inner tube is negatively charged and the outer tube is made positive.
▪ The mix is pumped gently down the inner tube, out through the bottom and up the outer tube.
inner tube

n. An inflatable rubber tube inserted into the casing of a pneumatic tyre / tire

inner tube

n. an inflatable rubber tube that fits inside the casing of a pneumatic tire

Inner Tube (The King of Queens)

Usage examples of "inner tube".

Tico was in his coveralls, with an inner tube over his shoulder and a Tropicola can in his hand.

But it seemed to him that he could lower the odds by remembering that what a man with an inner tube needed most of all was air.

All swimming and fishing paraphernalia was supposed to have been kept in the boathouse, but somehow bits of it had always been lying about on the porch: an inner tube that needed patching, a fishing rod, an assortment of lures, hooks, and floats.

Despite the weight and dripping of the inner tube balanced on his head, he found a match to light the stub of a cigar in his mouth.

I floated in my big soft inner tube, let the heat and bubbles soak into my skin.

Its eyes were wide, black, and staring, and a kind of leathery, slimy hide covered its flesh, like an inner tube lathered with Vaseline, though there were tiny holes corroded in it by the sunlight I had brought with me.

The gas torus is of low density, and is shaped like an overinflated inner tube-or a smoke ring, if a smoke ring were spinning, with the inner part going somewhat faster than the outer.

Both ends of the mess hall were open to the corridor, which ran through Level Four like the inner tube of an old-fashioned bicycle tire.

When the tube was squeezed, the white toothpaste would run through the special inner tube, while the pressure of the squeeze simultaneously forced the red toothpaste through the tiny orifices at the end.

It was like racing down a snowy hill on a giant inner tube, completely out of control.