1. To create a compressed ARChive (a "zip file") from one or more files using PKWare' s PKZIP or a compatible ARChiver. Its use is spreading from MS-DOS now that portable implementations of the algorithm have been written. zip is also the name of a UnixARChiving utility compatible with PKZIP. unzip is the corresponding de-ARChiver. See also gzip, tar and feather. 2. Zip Drive. [Jargon File] (1996-08-26)