inner tube

noun

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

Origin of inner tube

First recorded in 1890–95

Also called tube.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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

inner tube

Origin of .css-1fxfie5{font-size:22px;}@media (max-width:768px){.css-1fxfie5{font-size:18px;margin:0 10px 10px 0;word-break:break-all;word-wrap:break-word;-webkit-hyphens:auto;-moz-hyphens:auto;-ms-hyphens:auto;hyphens:auto;line-height:22px;}}inner tube

inner tube

Origin of inner tube