Definitions for walk around
perambulate, walk about, walk around(verb)
walk with no particular goal
"we were walking around in the garden"; "after breakfast, she walked about in the park"
circumambulate, walk around(verb)
walk around something
behave in a certain manner or have certain properties
"He walks around with his nose in the air"; "She walks around with this strange boyfriend"
"We were walking around in the neighborhood to see whether we could find an open drugstore"
To walk with no real planned destination, but to just walk, to meander "around".