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English definition of “brother”

brother

noun [C]     /ˈbrʌðər/
RELATIVE A1 a boy or man who has the same parents as you: an older/younger brother my big/little brotherFamily relations in general
MEMBER a man who is a member of the same race, religious group, organization, etcKinds of menMen and womenPosition and status in groups and organizations
RELIGION (also Brother) a monk (= man who lives in a male religious group): Brother PaulMonks and nuns
(Definition of brother noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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