Green Light Definition

noun
The green-colored light that signals traffic to proceed.
American Heritage
Permission or authorization to proceed with a proposed undertaking, as the project of making a film from a script that has been submitted.
Webster's New World
Synonyms:
verb

Alternative spelling of greenlight.

Wiktionary

Other Word Forms of Green Light

Noun

Singular:
green light
Plural:
green-lights

Origin of Green Light

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

    From Wiktionary

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green light