To walk around or wander from place to place; pacing about (either purposively or restlessly).
彼は部屋の中を歩き回って深く考え込んでいた。
He was pacing around the room, deep in thought.
観光地を一日中歩き回って疲れた。
I walked around the tourist spots all day and got tired.
赤ちゃんが家の中を歩き回るようになった。
The baby has started walking around the house.