- (countable) Someone's grandparent is the parent of their parent. It is one's grandmother or grandfather.
- The mother of my mother is Jane Smith. Jane Smith is one of my grandparents.
- I have four grandparents. They are the mother and father of my mother, and the mother and father of my father.
|Members of a family (edit)|
parent: father - mother | spouse: husband - wife | child: son - daughter | sibling: brother - sister | uncle | aunt | nephew | niece | cousin | grandparent: grandfather - grandmother | grandchild: grandson - granddaughter