A grandchild; the child of your son or daughter.
Compound of 'grand' (great) + 'baby.' This affectionate term became popular in American English in the late 20th century, especially in Southern dialect.
Grandparents often use 'grandbaby' with a special warmth that 'grandchild' doesn't quite capture—language researchers have noticed that terms we use for people we deeply love tend to be shorter and more playful.
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