unzip

US /ʌnˈzɪp/
UK /ʌnˈzɪp/
"unzip" picture
1.

to open the zipper of something

:
Please unzip your bag for inspection.
She carefully unzipped her dress.
2.

to extract files from a compressed folder

:
You need to unzip the downloaded file before you can use it.
The software automatically unzips the installation files.