zip up phrasal verb (
see also zip)
to fasten something using a zip, or to become fastened using a zip
Antonym : unzipzip something ↔ up
He was zipping up a small brown suitcase. The dress zipped up at the front.zip somebody up Could you zip me up (=fasten my dress) please? I can’t reach. [TahlilGaran] Dictionary of Contemporary English ▲