Sentence:  America's <WSD>poverty</WSD> line is $63 a day for a family of four. In the richer parts of the emerging world $4 a day is the <WSD>poverty</WSD> barrier. But <WSD>poverty</WSD>'s scourge is fiercest below $1.25 (the average of the 15 poorest countries' own <WSD>poverty</WSD> lines, measured in 2005 dollars and adjusted for differences in purchasing power): people below that level live lives that are poor, nasty, brutish and short. 
Meaning of the word marked with <WSD> tags:  The quality or state of being poor; lack of money