いこく 亥の刻 LinksSentence search for 亥の刻Sentence search for いのこくKanji details for 亥 and 刻Edit in JMdict Expressions (phrases, clauses, etc.), Noun1. hour of the Boar (around 10pm, 9-11pm, or 10pm to 12 midnight)Archaic Discussions Log in to talk about this word.