義兄弟
ぎ
きょ
う
だ
い
Meanings
1
brother-in-law; stepbrother; sworn brother
Refers to a brother-like relationship not based on blood: a spouse's brother, a stepbrother through a parent's remarriage, or a man bound by a sworn oath. The exact meaning depends on context.
He is my brother-in-law. He is my wife's younger brother.
Through my father's remarriage, I got a new stepbrother.
They exchanged cups as sworn brothers.