1. A signal to proceed
   - go-ahead 
2. Permission to proceed with a project or to take action
   "the gave the green light for construction to begin"

Derived forms: green lights

Type of: permission, robot [S.Africa], stoplight [N. Amer], traffic light, traffic signal

Encyclopedia: Green light

• disc brake
• disc drive
• disc harrow
• disc pack
• disc space
• disc-jockey
• disc-shaped
• discalceate
• discalced
• discant
• discard
• discarded
• discarnate
• discase
• disceptation
• discern
• discernability
• discernable
• discernible
• discernibly
• discerning
• discerningly
• discernment
• discerp
• discharge