節ふし穴あな

noun

knothole; peephole

Literal hole in wood where a knot has fallen out, or a small hole for looking through.

• 古ふるい床ゆか板いたの節ふし穴あなから光ひかりが漏もれていた。

  Light was leaking through a knothole in the old floorboard.

• 彼かれはドアの節ふし穴あなから部屋へやの中なかをのぞいた。

  He peeked into the room through a peephole in the door.

noun

poor eyesight; tunnel vision

Figurative use, often in set phrases like 節穴か or 節穴もいいところ, implying someone fails to notice obvious things.

• こんなに近ちかくにあるのに気きづかないなんて、お前まえの目めは節ふし穴あなか。

  It's right here and you didn't notice? Are your eyes just for show?

• あの審しん判ぱんは節ふし穴あなだ。明あきらかなファウルを見み逃のがした。

  That referee is blind. He missed an obvious foul.