green lightgreen light
Origin of green lightin allusion to the green “go” signal of a traffic light
- The green-colored light that signals traffic to proceed.
- Informal Permission to proceed.
(plural green lights)
From the standard red-green color scheme used in traffic lights and railway signals.
(third-person singular simple present green-lights, present participle green-lighting, simple past and past participle green-lit or green-lighted)
- Alternative spelling of greenlight.