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inner tube

noun
1.
a doughnut-shaped, flexible rubber tube inflated inside a tire to bear the weight of a vehicle.
Also called tube.
Origin of inner tube
1890-1895
First recorded in 1890-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for inner tube
Historical Examples
  • As long as the stopcock is closed the water cannot rise in the inner tube.

  • He worked desperately, and soon the inner tube was as good as ever.

    The Rushton Boys at Rally Hall

    Spencer Davenport
  • For convenience the inner tube of this condenser should not be over 50 cm.

    Soap-Making Manual E. G. Thomssen
  • "He wants to go to New Rochelle for an inner tube," he said.

    Somewhere in France Richard Harding Davis
  • The inner tube had nipped because we skidded so,' Leggatt interrupted.

    A Diversity of Creatures

    Rudyard Kipling
  • In a couple of minutes, the tire was off the wheel and the inner tube was out of the casing.

    The Fourth R George Oliver Smith
  • Through this, the inner tube had blown out with the report that had so startled them.

    The Rover Boys in Business Arthur M. Winfield
  • Let us see how quickly we can put on another shoe and inner tube.

    The Rover Boys in Business Arthur M. Winfield
  • The inner tube was open, so that air could reach the inner surface of the wick as well as the outer surface.

    Artificial Light M. Luckiesh
  • The shoe of the rear left wheel had been badly cut by the sharp stones and the inner tube had been blown out through the cut.

    Dave Porter and the Runaways Edward Stratemeyer
British Dictionary definitions for inner tube

inner tube

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
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Difficulty index for inner tube

Few English speakers likely know this word

Word Value for inner

5
7
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