inner tube

noun
Updated on: 16 Jan 2018

Definition of inner tube

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

Recent Examples of inner tube from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'inner tube.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of inner tube

1894


INNER TUBE Defined for English Language Learners

inner tube

noun

Definition of inner tube for English Language Learners

  • : a round tube that holds air inside a tire



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