OK

OK can be:

• The expression Okay in the English language.
• The U.S. postal abbreviation for the state of Oklahoma.
• The IATA airline designator for Czech Airlines.
• An alternate reference to the international convenience store chain Circle K.
• The International OK Dinghy is a single handed racing dinghy with an unstayed rotating mast. i.e., A smaller version of the International Finn Dinghy