From King Dictionary of Contemporary English
Related topics: Family
grandchildgrand‧child /ˈɡræntʃaɪld/ ●●● S3 W3 noun (plural grandchildren /-tʃɪldrən/) [countable] SSFFAMILYthe child of your son or daughter
Examples from the Corpus
grandchildI was the fifth grandchild, and as there were seven more after me, I stayed familiar with the tarantella.Most of the dough is funneled into a trust fund for her grandchildren and great-grandchildren.And his grandchildren will transfer to inferior schools.Nowadays my grandchildren come here for the same family festival.Married with three children and several grandchildren, John Ryan now lives and works in Rye, Sussex.Sixty-seven people were killed, including her son-in-law and three grandchildren.Maria had lived to see the birth of twenty grandchildren, thirty great-grandchildren, and two great-great-grandchildren.