むねだ 胸を出す Show inflections LinksSentence search for 胸を出すSentence search for むねをだすKanji details for 胸 and 出Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'su' ending1. to have training bouts with one's junior during practice (of a senior wrestler)Sumo Discussions Log in to talk about this word.