1. [Brit] Advisory, Conciliation and Arbitration Service 
2. Airborne Collision Avoidance System

Encyclopedia: ACAS

• pinball
• pinball game
• pinball machine
• pince-nez
• pincer
• pinch
• pinch bar
• pinch hitter
• pinch-hit
• Pinchas Zukerman
• pinchbeck
• pinche
• pinched
• pincher
• pinchgut
• pinchpenny
• Pinckneya
• Pinckneya pubens
• Pinctada
• Pinctada margaritifera
• pincurl clip
• Pincus
• pincushion
• pincushion flower
• pincushion hakea