虎こ穴けつ

noun

tiger's den; lion's den; very dangerous place

Figurative expression for an extremely dangerous place or situation. Often used in the proverb 虎穴に入らずんば虎子を得ず (Nothing ventured, nothing gained).

• 敵てきの本ほん拠きょ地ちに乗のり込こむのはまさに虎こ穴けつに入はいるようなものだ。

  Going into the enemy's stronghold is like entering a tiger's den.

• 彼かれは虎こ穴けつに飛とび込こむ覚かく悟ごで、危き険けんな任にん務むを引ひき受うけた。

  He took on the dangerous mission with the resolve to jump into the lion's den.