grandparent
n. countable A1 Beginner Oxford US //ˈɡɹændˌpɛɹənt// UK //ɡɹˈændpeəɹənt// grand·par·ent General-service
n. the mother or father of your parent. You have four of them in your family tree.
n. the parent of one's father or mother.
My grandparent lives in a small house by the sea.
Every summer, the children visit their grandparent to help in the garden and hear stories about the past.
The role of the grandparent has evolved significantly in modern society, often shifting from a distant figure of authority to a primary caregiver in multi-generational households.
From grand- + parent. Compare French grand-parent.