What does SLY stand for?

Hayward, WI - Location identifier - FAA (FAAL)

Safety, Liquidity, Yield

Selayar - Language code (ETLW)

Skelly Resources Ltd. - Vancouver Stock Exchange symbol

Sky Line for Air Services Ltd. - Sudan - ICAO designator (FAAC)

Sloppy - Horse racing

Southerly

Slowly (SAUS)