IPA: /ˈɡrænˌtʃaɪld/
KK: /ˈɡrænˌtʃaɪld/
A child of your son or daughter.
My grandchild loves to play in the park.
Grandchild → It is formed from "grand-" (from Old French *grand*, meaning large or great) and "child" (from Old English *cild*, meaning young human). The word "grandchild" refers to the child of one's child, indicating a generational relationship that is one step greater than a child.
Think of 'grand' meaning great or large, and 'child' meaning young human. This helps you remember that a grandchild is a great or next generation child.