Sentence:  Cows were kept in backyard barns , boys were hired to drive them to and from the pasture on the edge of town , and familiar to the ear , morning and evening , were the boys ' coaxing voices , the thud of hooves , and the thwack of a stick on <WSD>cowhide</WSD> . 
Meaning of the word marked with <WSD> tags:  leather made from the hide of a cow