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Noun: turn signal
Usage: N. Amer (elsewhere: indicator)
  1. A blinking light on a motor vehicle that indicates the direction in which the vehicle is about to turn
    "He forgot to use his turn signal before changing lanes";
    - blinker, turn indicator, trafficator [Brit], indicator [Brit]

Derived forms: turn signals

Type of: visual signal

Part of: electrical system

Encyclopedia: Turn signal