zipper

A zipper is the handy closure you pull on a jacket, bag, pair of boots, or suitcase to bring two sides together. It works with two rows of small teeth that lock when the slider moves one way and separate when it moves the other way. In daily life, it helps keep things closed, covered, and secure.

People also use the word as a verb: you can zip up your coat before going outside or zip a backpack shut before a trip. The name comes from the quick "zip" sound it can make. If one breaks or gets stuck, it can turn a simple moment into an annoying one.

A zipper is a mechanical fastener used to join two edges of cloth or other flexible material. It usually has two rows of small metal, plastic, or nylon teeth and a sliding part that locks or unlocks them. Most also have a pull tab, which gives your fingers something to hold as you move it up or down.

You see zippers almost everywhere in everyday life. They are common on coats, jeans, dresses, skirts, boots, backpacks, suitcases, tents, sleeping bags, and small pouches. Some are heavy and strong for work clothes or luggage, while others are light or nearly hidden for dresses and other fine clothing. Their main job is simple: to open and close something quickly and hold it shut with little effort.

The word can also be used as a verb. You can zip your jacket, zip up a bag, or say that someone is zipped into a coat. In a more informal sense, "zip it" or "zip your lip" means "be quiet." These uses all connect to the same basic idea of closing, sealing, or shutting something fast.

The term became popular in the early 20th century and was inspired by the short sound the fastener makes. For most learners, though, the everyday meaning matters most: a zipper is the sliding closure that keeps clothing and other items neatly shut and easy to open again.