zipper
n. countable A2 Elementary US //ˈzɪpɝ// UK //zˈɪpɐ// zip·per
n. a device with two rows of metal or plastic teeth that you pull together to close a bag or clothes.
n. a fastening device consisting of two flexible tracks of interlocking teeth that are joined or separated by a sliding tab.
The zipper on my jacket is stuck.
She pulled the zipper up to her chin to stay warm in the cold wind.
While buttons were the standard for centuries, the invention of the zipper revolutionized the garment industry by providing a faster and more secure method of closure.
Usage
Commonly used in American English; the British equivalent is 'zip'.