指し名めい運うん転てん者しゃ

noun

designated driver

A person chosen to stay sober and drive others home after drinking. Often used in the context of preventing drunk driving.

• 飲のみ会かいでは、指し名めい運うん転てん者しゃを決きめておくことが大たい切せつです。

  At drinking parties, it's important to decide on a designated driver beforehand.