GCS means: Girl Scout cookies (in Community Dictionary, added by Ibrahim Silva)

What else does GCS mean?

  • Glasgow Coma Score or Glasgow Coma score. Scoring system that determines a person’s consciousness level. The score is determined by the individual’s reaction to pain, eye movements and verbal skills. Publication by the University of Glasgow. For children younger than 36 months, the Paediatric GCS or PGCS can be used. (in Community Dictionary, added by Remington Vaughn)
  • General Chirpsing Skills is a shorter version. It was invented by Hackney’s badass youth. A boy may chat up a girl with his friends and say ‘GCS. (in Community Dictionary, added by Almudena Caballero)