noun🔗ShareArrière-nièceA granddaughter of one's sibling; a daughter of one's nephew or niece. (Brother's granddaughter: fraternal grandniece. Sister's granddaughter: sororal grandniece.)"My brother's granddaughter, Lily, is my grandniece. "Lily, la petite-fille de mon frère, est mon arrière-nièce.familyChat with AIVocabulary GamePractice Reading