The Japanese noun '昼 (ひる)' refers to the period of the day when the sun is up, typically from morning until evening. It is often used to describe the time around noon or the afternoon. For example: I will go shopping during the daytime「昼に買い物に行きます」(ひるにかいものにいきます). Let's have lunch at noon「昼に昼ごはんを食べましょう」(ひるにひるごはんをたべましょう). The word can also be used in compound words, such as '昼休み (ひるやすみ)' which means 'lunch break' or 'midday break'.