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emergency brake

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noun
Also called parking brake. a special brake used to prevent a motor vehicle from rolling after it has stopped or been parked.Compare brake1 (def. 1).
any brake meant to stop a vehicle in an emergency.
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Origin of emergency brake

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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