プログレッシブ和英中辞典(第4版)の解説
きゅうしょ【急所】
&fRoman1;〔生命にかかわる所〕a vital part [point]
急所を外れる
〔弾丸などが〕miss a vital spot
ボールは急所に当たったらしい
The ball seems to have hit him where it hurts.
&fRoman2;〔要所〕the main point
急所を突いた質問
a question that touches [goes to] the heart of the matter／a question which touches on a vital [key] point
急所を突かれてたじたじだった
I was attacked on a vulnerable spot and wavered.