hand-hole

Noun

A small hole in a steam boiler for the insertion of the hand in cleaning, etc.

Japanese Meaning

蒸気ボイラ内で掃除等の手作業のために手を挿入できるよう設けられた小さな穴

Before the technicians began scrubbing the boiler, one of them reached through the hand-hole to dislodge the scale.

技術者たちがボイラーの洗浄を始める前に、彼らの一人が堆積物を取り除くために点検用の手孔から手を差し入れた。

Sense（1）

A small hole in a steam boiler for the insertion of the hand in cleaning, etc.

hand-holes

（ plural ）