Sentence:  One would need to test this proposition carefully ; after all , the large ( and probably unreliable ) Reader 's Digest literature on the `` most unforgettable character I ever met '' deals with village grocers , country doctors , favorite if illiterate <WSD>aunts</WSD> , and so forth . 
Meaning of the word marked with <WSD> tags:  the sister of your father or mother; the wife of your uncle