green light

See synonyms for green light on
  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.

Other definitions for green-light (2 of 2)


verb (used with object),green·-light·ed or green·-lit, green·-light·ing.
  1. to give permission to proceed; authorize: The renovation project was green-lighted by the board of directors. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use green light in a sentence

British Dictionary definitions for green light

green light

  1. a signal to go, esp a green traffic light

  2. permission to proceed with a project

verbgreenlight -lights, -lighting or -lighted (tr)
  1. 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