Word parts

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key + chain

Pronunciation

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Singular
keychain

Plural
keychains

 
A keychain with a leather key fob.
  1. (countable) A keychain is a chain or ring to which a key can be attached to.
  2. (countable) A keychain is an ornamental piece holding such a chain or ring.
  3. (countable) (cryptography) A keychain is a digital repository for the storage of cryptographic keys.