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Definition of Grandfather
1. Noun. The father of your father or mother.
Definition of Grandfather
1. n. A father's or mother's father; an ancestor in the next degree above the father or mother in lineal ascent.
Definition of Grandfather
1. Noun. a father of someone’s parent: ¹
2. Noun. (context: by extension) a male forefather ¹
3. Verb. To retain existing laws or rules only for those people or organisations that were previously affected by them, and apply new laws or rules to the unaffected people or organisations. ¹
¹ Source: wiktionary.com
Definition of Grandfather
1. [v -ED, -ING, -S]
Medical Definition of Grandfather
1.
A father's or mother's father; an ancestor in the next degree above the father or mother in lineal ascent. Grandfather longlegs.