いTop 6000MeaningsNoun1. wellOther spellings井い17%Kanji in other spellings井a wellPitch accentいUsed in vocabulary松まつ井い証しょう券けんMatsui Securities (Japanese online securities firm)Noun日にっ商しょう岩いわ井いNissho Iwai CorporationNoun丸まる亀がめ平ひら井い美び術じゅつ館かんMuseo Marugame HiraiNoun桜さくら井い女じょ子し短たん大だいSakurai Women's Junior CollegeNoun石いし井い工こう作さく研けん究きゅう所じょIshii Tool & Engineering CorporationNoun竹たけ井い美び術じゅつ館かんTakei Art MuseumNoun松まつ井い天てん狗ぐ堂どうMatsui Tengudo (karuta maker)NounExamples1井いの中なかの蛙かえる、大たい海かいを知しらず。He who stays in the valley shall never get over the hill.