ちゅうさん 昼三 LinksSentence search for 昼三Sentence search for ちゅうさんSentence search for 中三Kanji details for 昼 and 三Edit in JMdict Noun1. highest ranking prostitute in Edo's Yoshiwara red-light district (from the Hōreki era onward)Archaic, See also 宝暦Other forms中三 【ちゅうさん】 Discussions Log in to talk about this word.