a member of a people or tribe that has no permanent abode but moves about from place to place, usually seasonally and often following a traditional route or circuit according to the state of the pasturage or food supply.

any wanderer; itinerant.

nomadic.

noun

hobo , itinerant , migrant , pilgrim , rambler , roamer , rover , vagabond , wanderer , wayfarer , arab , bedouin , roving