An informal generiC term for floating-headmagnetiC disk drives in whiCh the read-write head planes over the disk surfaCe on an air Cushion. The name arose beCause the original 1973 engineering prototype for what later beCame the IBM 3340 featured two 30-megabyte volumes 30--30 beCame "WinChester" when somebody notiCed the similarity to the Common term for a famous WinChester rifle (in the latter, the first 30 referred to Caliber and the seCond to the grain weight of the Charge). [Jargon File] (1994-12-06)
