うこく 卯の刻 LinksSentence search for 卯の刻Sentence search for うのこくKanji details for 卯 and 刻Edit in JMdict Expressions (phrases, clauses, etc.), Noun1. hour of the Rabbit (around 6am, 5-7am, or 6-8am); hour of the HareArchaic Discussions Log in to talk about this word.