noun
vent; ventilation hole; air hole
A small opening that allows air to pass through, often for ventilation or pressure equalization. Used in technical and everyday contexts.
この容器には通気孔が付いている。
This container has a vent.
機械の通気孔をふさがないでください。
Please do not block the machine's ventilation holes.
Compound of 通気 (ventilation, air flow) and 孔 (hole, opening).