一いっ昼ちゅう夜やMeaningsNounAdverb1. whole day and night; 24 hoursKanji used一one昼midday夜nightPitch accentいっちゅうやComposed of一いちone; 1; best; first; foremost; beginning; start; a (single); one (of many); ace; …Numeric昼ちゅう夜やday and nightNoun