警けい砲ほうけいほうMeanings1nounwarning gun; alarm gunA gun fired as a warning or alarm signal, often in maritime or military contexts.沿えん岸がん警けい備び隊たいは不ふ審しん船せんに対たいして警けい砲ほうを発はっ射しゃした。The coast guard fired a warning gun at the suspicious vessel.