also: かぜあな
noun
General term for an opening that lets air or wind pass through, such as a ventilation hole or a natural fissure.
壁に風穴を開けて換気を良くした。
We made an air hole in the wall to improve ventilation.
洞窟の奥
There was a small windhole deep inside the cave.
noun
deep cave with cold wind
Specific geological term for a deep cave from which cold wind blows, often due to temperature differences; also read ふうけつ in this sense.
See also: 風穴 (ふうけつ)
この地域には風穴と呼ばれる洞窟が点在している。
Caves called 'wind caves' are scattered throughout this region.