un·zip 
/ˌʌnˈzɪp/ verb
un·zips; un·zipped; un·zip·ping /ˌʌnˈzɪp/ verb [+ obj] 1 : to open (something) by using a zipper
▪ He unzipped his jacket. ▪ She unzipped the tent flap. 2 computers : to cause (a file that has been reduced in size) to return to its original size by using special software
▪ unzip a compressed file
▪ He unzipped his jacket. ▪ She unzipped the tent flap.
▪ unzip a compressed file
