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

• bad block
• bad blood
• bad check
• bad cheque
• bad debt
• bad egg
• bad fairy
• bad faith
• bad guy
• bad hair day
• bad hat
• bad luck
• bad manners
• bad news
• bad person
• bad sector
• bad temper
• bad weather
• bad-mannered
• bad-tempered
• Badaga
• badass
• baddeleyite
• baddie
• baddy