Idiom: the green light = permission to start or continue something (such as a project): His boss finally gave him the green light [=the go-ahead] to start the new project. #IdiomCards ━━━━━━━━━━━━━━━ ☞» @CambridgeWords ☞» @PhrasalVerbsIdioms ☞» @American_English_Club 2.2K views20:18