To begin to walk; to start walking or set out on foot.
赤ちゃんがついに自分で歩き始めた。
The baby finally began to walk on their own.
駅を出てから、彼らはゆっくり歩き始めた。
After leaving the station, they slowly began to walk.
旅行の朝、私たちは早く歩き始めた。
On the morning of the trip, we set out early on foot.
痛みが和らいでから、彼はまた歩き始めた。
After the pain eased, he began walking again.