hobo (n.) Look up hobo at Dictionary.com
"a tramp," 1889, Western U.S., of unknown origin. Barnhart compares early 19c. English dialectal hawbuck "lout, clumsy fellow, country bumpkin." Or possibly from ho, boy, a workers' call on late 19c. western U.S. railroads. Facetious formation hobohemia, "community or life of hobos," is from 1923 (see bohemian).