いっきゅうにゅうこん 一球入魂 LinksSentence search for 一球入魂Sentence search for いっきゅうにゅうこんKanji details for 一, 球, 入 and 魂Edit in JMdict Noun1. putting one's heart and soul into each pitchBaseball, Yojijukugo (four character compound) Discussions Log in to talk about this word.