blood brother の英語での意味
blood brotherˌblood ˈbrother noun [countable] 
すべての翻訳を見る a man who promises loyalty to another, often in a ceremony in which the men’s blood is mixed together（しばしば互いの血を混ぜ合わせる儀式を通じて）別の男性に忠誠を誓う男性；義兄弟
すべての翻訳を見る a man who promises loyalty to another, often in a ceremony in which the men’s blood is mixed together（しばしば互いの血を混ぜ合わせる儀式を通じて）別の男性に忠誠を誓う男性；義兄弟