inner tube

noun

: an inflatable usually ring-shaped rubber tube designed for use inside a pneumatic tire

Examples of inner tube in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This prancing herd of wild mustangs can be spotted from the river, on a kayak or inner tube. Madeline Gunderson, USA Today, 17 June 2026 Nothing says summer quite like pushing off on an inner tube and floating down a refreshing, natural lazy river as gorgeous landscapes pass by. Terry Ward, Travel + Leisure, 17 June 2026 Decades ago, tires needed inner tubes to hold air. Jason Fogelson, AJC.com, 29 May 2026 Austrian company Tubolito is known for manufacturing bicycle inner tubes from TPU (thermoplastic polyurethane), a high-tech material originally used for smartphone speaker membranes. Maryna Holovnova, New Atlas, 8 May 2026 See All Example Sentences for inner tube

Word History

First Known Use

1894, in the meaning defined above

Time Traveler
The first known use of inner tube was in 1894

Browse Nearby Words

Cite this Entry

“Inner tube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inner%20tube. Accessed 24 Jun. 2026.

Kids Definition

inner tube

noun
: an inflatable ring-shaped rubber tube used inside a tire to hold air under pressure

More from Merriam-Webster on inner tube

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster