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.
A detail view of the hoofs on horse running a race before the 140th Preakness Stakes. A view of the infield before the 140th Preakness Stakes. May 16, 2015; Baltimore, MD, USA; A fan in a traditional hat stands in the entrance to the grand stands before the 140th Preakness Stakes at Pimlico Race Course.