Definition of roll bar
:an overhead metal bar on an automobile that is designed to protect the occupant in case of a rollover
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roll bar
noun
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First Known Use of roll bar
1948
ROLL BAR Defined for English Language Learners
roll bar
noun
Definition of roll bar for English Language Learners
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: a metal bar in the roof of a car or other vehicle that is designed to protect riders if the vehicle rolls over
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