follow Dictionary.com

8 Words That Are Older Than You Think

green light

noun
1.
a green-colored traffic light used to signal drivers, pedestrians, etc., that they may proceed.
2.
authorization; approval; permission:
The railroad has been given the green light on the proposed fare increase.

green-light

verb (used with object), green-lighted or green-lit, green-lighting.
1.
to give permission to proceed; authorize:
The renovation project was green-lighted by the board of directors.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for green light
  • People could read the newspaper by their crimson and green light.
  • As he sat in the gloomy lab, watching neural signals dance in green light across an oscilloscope, he noticed something strange.
  • So the only way to see a star as being green is for it to be only emitting green light.
  • These devices create coherent green light in a three step process.
  • Finally, the top layer sports a different type of conducting polymer that absorbs mostly blue and green light.
  • Instead of using three circles, the red light is now a triangle and the green light is a square.
  • No one will say exactly when the browser project got the official green light.
  • All the local governments around here have a green light for entrepreneurs, and they want investment.
  • To get energy, the large chlorophyll molecules absorb red and blue light from sunlight and reflect green light.
  • He hasn't exactly been a fantasy beast thus far, but he's got a green light to shoot and is playing heavy minutes.
British Dictionary definitions for green light

green light

noun
1.
a signal to go, esp a green traffic light
2.
permission to proceed with a project
verb (transitive) -lights, -lighting, -lighted
3.
to permit (a project, etc) to proceed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Slang definitions & phrases for green light

green-light

verb

To approve; sanction: Who in the world thought that Levinson's screenplay should be green-lighted? (1968+)


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
Cite This Source

Word of the Day

Difficulty index for green light

Few English speakers likely know this word

Word Value for green

6
8
Scrabble Words With Friends

Quotes with green light