むなつはっちょう 胸突き八丁 LinksSentence search for 胸突き八丁Sentence search for むなつきはっちょうSentence search for 胸突八丁Kanji details for 胸, 突, 八 and 丁Edit in JMdict Noun1. the most trying spot or period; the most difficult periodOther forms胸突八丁 【むなつきはっちょう】 Discussions Log in to talk about this word.