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inner tube

noun

Simple Definition of inner tube

  • : a round tube that holds air inside a tire

Source: Merriam-Webster's Learner's Dictionary

Full Definition of inner tube

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

1894

First Known Use of inner tube

1894

Rhymes with inner tube

bouillon cube, breathing tube, down the tube, hypercube, speaking tube


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