Definition of matriarch noun from the Oxford Advanced Learner's Dictionary

 

matriarch

 noun
noun
BrE BrE//ˈmeɪtriɑːk//
 
; NAmE NAmE//ˈmeɪtrɑːrk//
 
Family background
 
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a woman who is the head of a family or social group compare patriarch See related entries: Family background Word Origin early 17th cent.: from Latin mater ‘mother’, on the false analogy of patriarch.
See the Oxford Advanced American Dictionary entry: matriarch