1. A brake system in a vehicle designed to stop the vehicle quickly in case of emergency or failure of the main braking system
He pulled the emergency brake when the car's regular brakes failed.
Ele puxou o freio de emergência quando os freios regulares do carro falharam.
2. In trains, a manual brake that passengers can activate to stop the train in case of emergency
The passenger pulled the emergency brake on the train.
O passageiro puxou o freio de emergência do trem.