'Brother' in the Bible

And he had been a father to Hadassah, that is Esther, the daughter of his father's brother: for she had no father or mother, and she was very beautiful; and when her father and mother were dead, Mordecai took her for his daughter.

Now when the time came for Esther, the daughter of Abihail, his father's brother, whom Mordecai had taken as his daughter, to go in to the king, she made request for nothing but what Hegai, the king's servant and keeper of the women, had given her. And Esther was looked on kindly by all who saw her.