noun🔗Share侄孙,外甥孙 A grandson of one's sibling; a son of one's nephew or niece. (Brother's grandson: fraternal grandnephew. Sister's grandson: sororal grandnephew.)"My brother's grandson, a bright young grandnephew, is starting school next week. "我哥哥的孙子,这个聪明伶俐的侄孙,下周就要开始上学了。familyChat with AIVocabulary GamePractice Reading