green light

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See also: greenlight and green-light



From the standard red-green color scheme used in traffic lights and railway signals.


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green light (plural green lights)

  1. A traffic light in its green state (indicating that vehicles may proceed).
    The drive home was much faster than usual; somehow we managed to hit every green light.
  2. (idiomatic) Approval, or permission to proceed.
    We have a green light on the project. Work starts today.
  3. (slang) A go-ahead to commit a crime, specifically to carry out a hit on someone (i.e. to kill).
    Yo man, I heard someone had put a green light out on you, so watch your back.

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