also: きー・ほるだー
noun
keychain; key holder
A small chain or ring for holding keys, often with a decorative charm. Wasei-eigo from 'key holder'.
wasei-eigo (Japanese-coined English), from key holder
旅行のお土産にキーホルダーを買った。
I bought a keychain as a souvenir from my trip.
鍵をなくさないようにキーホルダーをつけている。
I attach a keychain so I don't lose my keys.
noun
Technical term in cryptography for a storage file or container holding encryption keys. Domain-specific use.
PGPでは公開鍵をキーホルダーに保存する。
In PGP, public keys are stored in a key ring.