stoplight

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stoplight

A car stops at a red stoplight.

Definition
  1. Noun:
    • A traffic signal using colored lights to control the flow of vehicles at an intersection. It is a device that uses red, yellow (amber), and green lights to instruct drivers when to stop, prepare to stop, and go.
    • A red warning light on the rear of a vehicle. This light illuminates when the vehicle's brakes are applied, signaling to following traffic that the vehicle is slowing down or stopping.
Usage Examples
  • Noun (Traffic Signal):
    • Wait for the stoplight to turn green before you proceed.
    • The intersection is controlled by a stoplight.
  • Noun (Vehicle Light):
    • One of the car's stoplights is broken, so it's not safe to drive at night.
    • I saw his stoplight flash, so I began to brake as well.
Advanced Usage
  • "To run a stoplight": To drive through an intersection when the traffic signal is red.
    • He got a ticket for running a stoplight.
Variants and Related Words
  • Traffic light (noun): A more common synonym for the first meaning (the intersection signal).
  • Brake light (noun): A more precise and common synonym for the second meaning (the red light on a vehicle).
  • Traffic signal (noun): A formal term for the device that controls traffic flow.
Synonyms
  • For the traffic signal: Traffic light, traffic signal, signal.
  • For the vehicle light: Brake light, tail light (though a tail light is always on, while a stoplight/brake light only illuminates when braking).
Related Phrases
  • Red light: Specifically refers to the red signal on a traffic light, or can informally refer to the traffic light itself.
    • The car stopped at the red light.
  • Green light: The signal to proceed; also used metaphorically to mean permission.
    • We got the green light to start the project.
stoplight

A car stops at a red stoplight.

Noun
  1. a visual signal to control the flow of traffic at intersections
  2. a red light on the rear of a motor vehicle that signals when the brakes are applied to slow or stop