From Longman Dictionary of Contemporary EnglishRelated topics: Familygrandchildgrand‧child /ˈɡræntʃaɪld/ ●●●S3W3 noun (plural grandchildren /-tʃɪldrən/) [countable]SSFFAMILYthe child of your son or daughterExamples from the Corpusgrandchild• I was the fifthgrandchild, and as there were seven more after me, I stayed familiar with the tarantella.• Most of the dough is funneled into a trustfund 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.• Maria had lived to see the birth of twenty grandchildren, thirty great-grandchildren, and two great-great-grandchildren.