\Sun"down`er\, n.
A tramp or vagabond in the Australian bush; -- so called from
his coming to sheep stations at sunset of ask for supper and
a bed, when it is too late to work; -- called also {traveler}
and {swagman} (but not all swagmen are sundowners).

      Sundowners, -- men who loaf about till sunset, and then
      come in with the demand for unrefusable rations.
                                               --Francis
                                               Adams.