Lengua inglesa
noun (brothers or (archaic or formal except in sense 3) brethren )
1 a boy or man with the same natural parents as another person or people. Compare brother-in-law, half-brother, stepbrother.
2 a man belonging to the same group, society, church, trade union, etc as another or others.
3 (pl brethren ) a man who is a member of a religious group, especially a monk.
4 (often brother-man) a fellow-creature We are all brothers under the sun .
5 esp US dialect or Black slang, also Brit facetious as a form of address to a man: friend; mate.
[Anglo-Saxon brothor , plural brether ]

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