"a homeless tramp"
"he tried to help the really down-and-out bums"

"the tramp of military boots"

"she enjoys a hike in her spare time"

"We went tramping about the state of Colorado"

"Mules plodded in a circle around a grindstone"

"We had to tramp the creeks"

"The gypsies roamed the woods"
"roving vagabonds"
"the wandering Jew"
"The cattle roam across the prairie"
"the laborers drift from one town to the next"
"They rolled from town to town"