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English definition of “grandfather”


noun [C]     /ˈɡræn.fɑː.ðər/ US  /-ðɚ/ (informal grandpa, grandad)
A2 the father of a person's mother or father: Her grandfather on her mother's side was Italian. [as form of address] formal or old-fashioned Let me help you, Grandfather.Family relations in general
(Definition of grandfather noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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