1. A small light on a device or vehicle that indicates status, malfunction, or operational state
The indicator light on the dashboard turned red when the engine temperature rose.
A luz indicadora no painel ficou vermelha quando a temperatura do motor subiu.
2. A signal light used to show direction of turn in a vehicle
He turned on the indicator light before changing lanes.
Ele ligou a luz indicadora antes de mudar de faixa.
3. Any illuminated signal that conveys information about a device's operation or status
The power indicator light shows that the device is turned on.
A luz indicadora de energia mostra que o dispositivo está ligado.