にしにほん 西日本 Common word LinksSentence search for 西日本Sentence search for にしにほんSentence search for にしにっぽんKanji details for 西, 日 and 本Edit in JMdict Noun1. western Japan (usu. Chūbu region and westward)See also 東日本Other forms西日本 【にしにっぽん】 Discussions Log in to talk about this word.