Digging; the act or work of excavating a hole in the ground.
子どもたちは庭で穴掘りをして遊んでいた。
The children were playing by digging holes in the garden.
工事での穴掘りは重機を使って行われることが多い。
Excavation at construction sites is often done using heavy machinery.
犬が庭で穴掘りを始めたので、叱った。
The dog started digging in the yard, so I scolded it.