1. SSion, file format> To create a compreSSed archive (a "zip file") from one or more fileS uSing PKWare' SPKZIP or a compatible archiver. ItS uSe iSSpreading 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. 2. <Storage> Zip Drive. [Jargon File] (1996-08-26)