inner tube
An 'inner tube' is essential for various applications, from vehicle tires to recreational water activities.
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Definition
B2Automotive
(technical)A flexible, inflatable tube placed inside a tire to hold air and maintain tire shape.
Example
- He replaced the inner tube in his bicycle tire after discovering a puncture.
B1Recreation
(informal)A buoyant, ring-shaped device used for floating on water.
Example
- The kids spent the afternoon floating down the river on inner tubes.
Similar
Terms that have similar or relatively close meanings to "inner tube":