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roll bar

noun

Simple Definition of roll bar

  • : a metal bar in the roof of a car or other vehicle that is designed to protect riders if the vehicle rolls over

Source: Merriam-Webster's Learner's Dictionary

Full Definition of roll bar

  1. :  an overhead metal bar on an automobile that is designed to protect the occupant in case of a rollover


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to proceed clumsily or ineffectually

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