inner tube

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noun

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

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Also called tube.

Origin of inner tube

First recorded in 1890–95

Words nearby inner tube

innersole, inner space, innerspring, inner strength, Inner Temple, inner tube, inner-tuber, inner-tubing, innervate, innervation, innerve

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use inner tube in a sentence

On our last day together in Greece, we took the adventure wheelchair and swapped out the back bike tires for enormous inflated inner tubes almost the size of small car tires.
Adventuring with My Disabled Mom Healed Me, Too|Tessa Fontaine|March 2, 2021|Outside Online
Après-ski dance parties in crowded bars may not be a great idea this winter, but you can still boogie under disco lights—on an inner tube.
15 Ways to Play in the Snow This Year|Megan Michelson|November 26, 2020|Outside Online
Le Femme Finishing School helps transwomen find their inner beauty, no matter their age.
Inside A Finishing School for Transwomen|Sharon Adarlo|December 27, 2014|DAILY BEAST
For his part though, the dude with the inner grandma is pretty much just looking ahead.
Chris Colfer on Writing, Acting, and the Pain of Being A Pop Culture Trailblazer|Oliver Jones|December 15, 2014|DAILY BEAST

There must be in his life, as Truffaut remarked about Hitchcock's films, “inner fire and cool surfaces.”
Alfred Hitchcock’s Fade to Black: The Great Director’s Final Days|David Freeman|December 13, 2014|DAILY BEAST
This can be seen not just in distant exurbs or suburbs, but in prime inner-city neighborhoods.
The Rustbelt Roars Back From the Dead|Joel Kotkin, Richey Piiparinen|December 7, 2014|DAILY BEAST
The demonic ‘anti-Santa’ enjoys an unlikely renaissance as we learn to embrace our inner pagan.
Meet Krampus, the Seriously Bad Santa|Jay Michaelson|December 5, 2014|DAILY BEAST
Eggs and nestlings were found lying on the bare soil at the inner ends of the burrows; no nesting material was found.
Summer Birds From the Yucatan Peninsula|Erwin E. Klaas
The inner ends of the burrows were enlarged with a depression in the floor, where the eggs were laid.
Summer Birds From the Yucatan Peninsula|Erwin E. Klaas
Drone: the largest tube of a bag-pipe, giving forth a dull heavy tone.
Gulliver's Travels|Jonathan Swift
Should the vapor not condense well, the test-tube may be immersed in a glass of cold water.
A Manual of Clinical Diagnosis|James Campbell Todd
For comparison, the gas may be passed through a test-tube containing an equal amount of distilled water.
A Manual of Clinical Diagnosis|James Campbell Todd

British Dictionary definitions for inner tube

inner tube

noun

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