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See directional signal.
a light on a motor vehicle that can be made to flash on the side toward which the driver intends to steer; directional.
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|Noun||1.||turn signal - a blinking light on a motor vehicle that indicates the direction in which the vehicle is about to turn|
electrical system - equipment in a motor vehicle that provides electricity to start the engine and ignite the fuel and operate the lights and windshield wiper and heater and air conditioner and radio
visual signal - a signal that involves visual communication