zip zip file zipped zipped file 1. <tool, compression, file format> 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 {Unix} archiving utility compatible with {PKZIP}. {unzip} is the corresponding de-archiver. See also {gzip}, {tar and feather}. (1996-08-26) 2. <storage> {Zip Drive}. [{Jargon File}] 3. <functional programming> {zip function}.