noun
a crafty person prepares multiple escape routes; a wise man keeps options open
A yojijukugo meaning a shrewd person always has backup plans or escape routes. Literally 'a crafty rabbit has three burrows'. Used to describe someone who is very good at avoiding danger by preparing multiple options.
彼は狡兎三窟のたとえ通り、常に複数の逃げ道を用意している。
True to the saying 'a crafty rabbit has three burrows,' he always prepares multiple escape routes.
From Chinese classical literature, literally 'a crafty rabbit has three burrows'. The exact origin is uncertain, but it is a well-known yojijukugo.