Definition
to kill two birds with one stone: to achieve two things by doing a single action
to kill two birds with one stone: 一石二鳥
Example
You can make friends and improve your language skills by joining LEX – it’s killing two birds with one stone!
ランゲージエクスチェンジに参加すれば、友達も作れるし、語学力もアップするなんて、一石二鳥だ!
