主しゅ部ぶしゅぶMeanings1nounmain part; principal partGeneral term for the central or most important part of something.この論ろん文ぶんの主しゅ部ぶは第だい三さん章しょうです。The main part of this paper is Chapter 3.2nounsubject (noun phrase)grammar›Grammar term for the subject noun phrase of a sentence.日本にほん語ごの文ぶんでは、主しゅ部ぶが省しょう略りゃくされることがよく