発砲はっぽう
happō

Noun
Suru Verb

1. firing; discharge of gun

Transitive
ウィリーはあやまって父親ちちおや猟銃りょうじゅう発砲はっぽう、壁かべあなけた。
wiriiwa ayamatte chichioyano ryōjūo happō shi kabeni anao aketa.
Willie accidentally let off his father's shotgun and made a hole in the wall.