盟兄弟 Traditional form: 盟兄弟 Pinyin (reading): méngxiōngdì Definitions: sworn brother Characters: 盟 - alliance, covenant; oath; to swear 兄 - elder brother 弟 - young brother, junior Traditional characters: 盟 - alliance, covenant; oath; to swear 兄 - elder brother 弟 - young brother, junior