Definitions of vagabond:

• noun:   anything that resembles a vagabond in having no fixed place

  Example: "Pirate ships were vagabonds of the sea"

• noun:   a wanderer who has no established residence or visible means of support
• verb:   move about aimlessly or without any destination, often in search of food or employment

  Example: "Roving vagabonds"

• adjective:   wandering aimlessly without ties to a place or community

  Example: "Led a vagabond life"

• adjective:   continually changing especially as from one abode or occupation to another