hobo
NounWordNet 3.0
Webster's Dictionary (GCIDE)
Hobo \Ho"bo\, n.; pl. Hobos or Hoboes. [Of uncertain origin.] A professional tramp; one who spends his life traveling from place to place, esp. by stealing rides on trains, and begging for a living. [U. S.] -- Ho"bo*ism, n.
Syn: tramp; bum; vagrant; knight of the road. [Webster 1913 Suppl.]