grand·neph·ew /ˈgræn(d)ˈnɛf(ˌ)ju, ||ˈnɛv-/ 姪孫;侄外孫
Grand·neph·ew n. The grandson of one's brother or sister. ◄ ►
grandnephew n : a son of your niece or nephew [syn: great-nephew]