穴あなの開あくほど

expression

staring piercingly; looking hard

Used with verbs like 見る or 眺める to describe staring so intently it feels like boring a hole through something.

• 彼かれは穴あなの開あくほど私わたしの顔かおを見みつめた。

  He stared at my face so hard it felt like he was boring holes into it.