What does JAY stand for?

J & J Air Charters Ltd. - British - ICAO designator (FAAC)

Jarnango - Language code (ETLW)

Jayapura - Indonesia - Seismograph station code, US Geological Survey (SEIS)

Jayco - NCIC truck make code

Jayco - NCIC trailer make code

Journal of Applied Psychology - A publication (SAUS)

Ortiz Boat Manufacturing - NCIC boat manufacturer code (NCIC)

Ortiz Boat Manufacturing, Westminster, CA - Manufacturer code for watercraft hull identification number (USCG)

Travenol Laboratories, Morton Grove, IL - OCLC symbol (OCLC)

Marijuana Cigarette - Joint - Medicine (EDAA)