noun
keychain
KEE-chayn
noun
1
A small chain or ring used to hold keys together.
"His keychain jangled as he walked down the hall."
2
A decorative or novelty item attached to such a ring.
"She bought a tiny Eiffel Tower keychain as a souvenir."
3
A secure digital storage system for passwords and encryption keys on a computer or phone.
"The app saves your password to the device keychain."
How to Use Keychain
Learner’s notesIn plain EnglishA ring or chain for holding keys, or (on phones/computers) a secure place where passwords are stored.
Common pairings
souvenir keychain
save to keychain
Word Forms
keychains plural
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His _____ jangled as he walked down the hall.
Etymology
From "key" plus "chain", named for the physical ring that keeps keys together.