roam

Từ điển American Heritage Dictionary 4th

roam (rōm)v. roamed, roam·ing, roamsv. intr.
To move about without purpose or plan; wander. See Synonyms at wander.v. tr.
To wander over or through:
roamed the streets.n.
The act or an instance of roaming. [Middle English romen.] roamʹer n.