Zip up.
Meaning: This means to close a zipper, usually on a coat or jacket. It's like saying, Fasten the zipper on your coat.
Choice of Words: Zip is a verb that means to fasten something with a zipper. Up is an adverb indicating movement in an upward direction. Together, "Zip up" is a phrasal verb that means to fasten a zipper, usually on a coat or jacket.
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Related Expressions