噴ふん火か口こうふんかこうFreq.FrequencyTop 100,000Meanings1nounvolcanic craterRefers to the opening at the top of a volcano through which lava, ash, and gases are ejected.富ふ士じ山さんの噴ふん火か口こうは現げん在ざい活かつ動どうしていない。The crater of Mt. Fuji is not currently active.噴ふん火か口こうから煙けむりが立たち上のぼって