Meaning & use
inner tube
Last updated
An inflatable rubber tube placed inside a tire, or a similar tube used as a flotation device.
See it in a sentence
They patched the bicycle's inner tube after it went flat on the trail.
The kids spent the afternoon floating down the river on an old inner tube.
A note on using this word
Most modern car and bicycle tires are tubeless, so inner tubes are now mainly associated with bikes, tractors, and recreational floats.
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