va·gran·cy /ˈvegrən(t)si/
  漂泊,流浪,離題
  Va·gran·cy n. The quality or state of being a vagrant; a wandering without a settled home; an unsettled condition; vagabondism.
     Threatened away into banishment and vagrancy.   --Barrow.
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  vagrancy
       n : the state of wandering from place to place; having no
           permanent home or means of livelihood