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grandmother

noun [C]
 
 
/ˈɡræn.mʌð.ər/ /ˈɡræm-/ US  // (informal grandma, granny, gran)

Definition

A2 the mother of a person's father or mother: Both my grandmothers were from Scotland. [as form of address] formal or old-fashioned Sit down here, Grandmother, and rest.Family relations in general
(Definition of grandmother noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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