バイオリンは英語で
violin

英語の定義

バイオリン
1. n. (musical instruments) a violin
2. n. Usage: The ヴァイオリン spelling is less common, in part because the (IPAchar, /v/) sound does not exist in native Japanese terms, and many Japanese speakers find this difficult to pronounce.

violin
1. n. (musical instrument) A musical four-string instrument, generally played with a bow or by plucking the string, with the pitch set by pressing the strings at the appropriate place with the fingers; also
2. n. (music) A violinist.
The first violin often plays the lead melody lines in a string quartet.
3. v. To play on, or as if on, a violin.