Sentence:  He then sold her minerals to cure her <WSD>kidney</WSD> ailment , a can of sage `` to make her look like a girl again '' , and an application of plain mud to take her wrinkles away . 
Meaning of the word marked with <WSD> tags:  either of two bean-shaped excretory organs that filter wastes (especially urea) from the blood and excrete them and water in urine