What does SK stand for?

What does SK mean?

SK	Sigma Kappa Miscellaneous » Unclassified
SK	Sith Knight Miscellaneous » Science Fiction
SK	Safety- Kleen Corporation Business » NYSE Symbols
SK	Store Keeper Business » Positions
SK	Second Kingdom Community » Religion
SK	Short Kick Community » Sports
SK	Seto Kaiba Miscellaneous » Unclassified
SK	Stop Keying Computing » Security
SK	Savage Killer Community » Law
SK	Still Kissing Internet » Chat
SK	Seven Knights Community » Sports
SK	Shop Kept Business » General
SK	Strengthened Key Computing » Security
SK	Sigma Kappa (Sorority) Miscellaneous » Unclassified
SK	Stop Knudsen Miscellaneous » Funnies
SK	Singer Kearfott Governmental » Suppliers
SK	Shirley Kaiser Community » Famous
SK	Super Kiosk Business » General
SK	Supreme Kai Miscellaneous » Unclassified
SK	Seng Kang Community » Schools
SK	Saber Knights Miscellaneous » Science Fiction
SK	Spatial Key Computing » Security
SK	Schnellade Kanone Governmental » Military
SK	Scrap Killer Business » General
SK	Sniper King Miscellaneous » Unclassified