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- 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.
Origin of emergency brake
First recorded in 1895–1900
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for emergency brake
In a flash he was up, cutting off the power and bearing down on the emergency-brake.
He saw the danger, and with his hand upon the emergency-brake he threw his weight upon the wheel.