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brother - definition and synonyms

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noun [countable]     brother pronunciation in American English
Word Forms
  1. 1
    a boy or man who has the same parents as you

    My brother’s name is Brian.

    Do you have any brothers and sisters?

    his younger/older/little brother

    Synonyms and related words
  2. 2
    American spoken used for talking in a friendly way to a man
  3. 3
    a man who is connected to you in some way and who you have feelings of friendship toward

    All men are my brothers.

    We pray for all our brothers and sisters abroad.

  4. 4




    a man who is a member of a religious group, especially a monk

    Brother David

  5. 5
    used by men who belong to a labor union for talking to or referring to other men who are members

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