zip2 past tense and past participle zipped, present participle zipping
to fasten something using a zip:
'I'll see you tomorrow,' said John, zipping his jacket.
zip something shut/open
Olsen zipped the bag shut.
He zipped open the case (=unfastened it).
zip something together
The two sleeping bags can be zipped together to make a double.
2 [intransitive always + adverb/preposition] informal
to go somewhere or do something very quickly [= whizz, zoom]
zip through/past/along etc
We zipped through customs in no time.
3 American English spoken informal
used to tell someone not to say anything about something, or to tell them to be quiet:
You'd better zip your lip or you'll be in trouble!