元となった辞書の項目
火口
noun
the origin of a fire / an opening for ignition / the nozzle of a welder, etc / the opening through which the fire enters the barrel in a hinawajū / (volcanology) a crater
意味（1）
the origin of a fire
意味（2）
an opening for ignition
意味（3）
the nozzle of a welder, etc
意味（4）
the opening through which the fire enters the barrel in a hinawajū
意味（5）
(volcanology) a crater
