Unzip

verb (used with object), unzipped, unzipping.
1.
to open the zipper of.
verb (used without object), unzipped, unzipping.
2.
to become unzipped.
verb -zips, -zipping, -zipped
1.
to unfasten the zip of (a garment) or (of a zip or garment with a zip) to become unfastened: her skirt unzipped as she sat down
2.
(transitive) (computing) to decompress (a file) that had previously been zipped

1. To extract files from an archive created with PKWare’s PKZIP archiver.
2. A program to list, test, or extract files from a ZIP archive, commonly found on MS-DOS systems. zip, creates ZIP archives; both programs are compatible with archives created by PKWARE’s PKZIP and PKUNZIP for MS-DOS.
(1995-03-06)