Part of the Operating systems glossary: Mac OS is the computer operating system for Apple Computer's Macintosh line of personal computers and workstations. A popular feature of its latest version, Mac OS X, is a desktop interface with some 3-D appearance characteristics.
The Preakness Stakes is an American flat thoroughbred horse race held on the third Saturday in May each year at Pimlico Race Course in Baltimore, Maryland. It is a Grade I race run over a distance of 9.5 furlongs (13â16 miles (1,900 m)) on dirt.
Kentucky Derby. Written By: Kentucky Derby, the most-prestigious American horse race, established in 1875 and run annually on the first Saturday in May at Churchill Downs racetrack, Louisville, Kentucky. With the Preakness Stakes (run in mid-May) and the Belmont Stakes (early in June), it makes up American Thoroughbred racingâs coveted Triple Crown.