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inner tube

American  

noun

inner tubes plural
  1. a doughnut-shaped, flexible rubber tube inflated inside a tire to bear the weight of a vehicle.


inner tube British  

noun

  1. an inflatable rubber tube that fits inside a pneumatic tyre casing

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of inner tube

First recorded in 1890–95

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He’s also built a cage around the front of their inner tube, and gives everyone nets to catch the carp.

From The Wall Street Journal • Apr. 8, 2026

Consider the analogy of trying to capture a 3D image of a child wearing an inner tube around their waist.

From Science Daily • Apr. 22, 2024

A jet ski struck Foster’s son Kile Glover, who was floating on an inner tube being pulled by a pontoon boat in the lake.

From Los Angeles Times • Jul. 14, 2023

Kile Glover, her 11-year-old son with Bounce TV founder Ryan Glover, died in July 2012 after a personal watercraft struck the boy as he floated in an inner tube on the lake.

From Seattle Times • Jul. 13, 2023

The puncture must have happened only seconds before—Maddie could still hear the air hissing out of the inner tube.

From "Code Name Verity" by Elizabeth Wein

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