keychain
nounUK /ˈkiːtʃeɪn/
US /ˈkiːtʃeɪn/
A keychain is a small ring or clip that holds your keys together.
She keeps her house key and car key on a bright red keychain.
OTHER MEANINGS
2. A decorative charm or trinket attached to a key ring.
He bought a tiny silver Eiffel Tower keychain as a souvenir from Paris.
3. A short chain used to attach keys to a belt or bag so they are not lost.
The janitor wore a keychain on his belt loop.
4. A digital collection of security keys or passwords stored in software.
The app stores your login keychain securely on your device.