auntPronunciation: /ɑːnt/Translate aunt | into French | into German | into Italian | into Spanish Definition of aunt noun the sister of one’s father or mother or the wife of one’s uncle: she was brought up by her aunt and uncle informal an unrelated adult female friend, especially of a child. Origin: Middle English: from Old French ante, from Latin amitaaunt in other Oxford dictionaries Definition of aunt in the US English dictionary