uncouple
🇺🇸
/ˌʌnˈkʌpl/
🇬🇧
/ˌʌnˈkʌpl/
To separate two things that were joined together.
The train conductor had to uncouple the last two cars before the crossing.
列車の運転手は、踏切の前に最後の2両を切り離さなければならなかった。