A keyring is a metal ring that holds multiple keys together in one place. Most keyrings are simple loops of steel or brass, small enough to fit in your pocket but strong enough that your keys won't fall off. Some keyrings split open slightly so you can slide new keys on, while others stay closed and require threading each key through the opening.

Without keyrings, you'd need to carry each key separately: your house key in one pocket, your bike lock key in another, maybe your locker key somewhere else. You'd constantly lose keys or forget which one opens what. A keyring solves this problem by keeping everything together.

People often attach key fobs to their keyrings, which are decorative tags or useful tools like bottle openers or small flashlights. Many adults carry keyrings with their car keys, house keys, and office keys all in one bundle. When you hear someone's keys jangling as they walk, that's the sound of metal keys clinking together on their keyring.

In computing, the word takes on a different meaning: a digital keyring stores passwords and encryption keys, keeping them organized and secure, just like a physical keyring keeps metal keys together.