1. A mechanical or electronic equipment designed to prevent injury, accidents, or damage by automatically stopping or controlling a dangerous operation
The elevator has multiple safety devices to prevent falls.
O elevador possui vários dispositivos de segurança para evitar quedas.
2. A protective mechanism that activates under hazardous conditions
The airbag is an important safety device in modern cars.
O airbag é um dispositivo de segurança importante em carros modernos.