陸りく奥おうFreq.FrequencyTop 20,000Meanings1nounRikuō Provincehistorical termHistorical province of Japan, located in what is now Aomori and Iwate prefectures. Used in historical contexts.陸りく奥おうは、明めい治じ時じ代だい以い前ぜんの日本にほんの旧きゅう国こく名めいの一ひとつです。Rikuō is one of the old provinces of Japan from before the Meiji era.