a tactic in flirting, to give the go-ahead for the other person to ask you out via non-verbal cues.

When someone gives you the "Go ahead"

Green Light(verb)

Pronounciation - \ˈgrēn-ˌlīt\

To give a positive signal to do, or say something.

1. to approve something

2. permission to do something
(from the green traffic light indicating that vehicles may proceed)

When a person sits in the back of spanish class (or anywhere) and plays a version of the game, fire truck. In this particular version, a person slowly moves their clammy, hairy hand up another persons leg until the other person says a chosen safe word, or red light. Next, you switch roles. You try to see who can get further up the other persons leg before they say the stop word. You earn the nickname Greenlight when you let the other person go "all the way" or until the point where you engage in a fingering motion or hand job.

A green light is when someone is goin to kill u and only u

A light version of Rolling Rock beer which doesn't quite taste like liquid hotdogs/urine/