Sentence:  Cows were kept in backyard barns , boys were hired to drive them to and from the pasture on the edge of <WSD>town</WSD> , and familiar to the ear , morning and evening , were the boys ' coaxing voices , the thud of hooves , and the thwack of a stick on cowhide . 
Meaning of the word marked with <WSD> tags:  an urban area with a fixed boundary that is smaller than a city