おとうとむすこ 弟息子 LinksSentence search for 弟息子Sentence search for おとうとむすこSentence search for おとむすこKanji details for 弟, 息 and 子Edit in JMdict Noun1. younger sonsOther forms弟息子 【おとむすこ】 Discussions Log in to talk about this word.