八はっ角かく墳ふんはっかくふんじ字FuriganaMeanings1nounoctagonal burial moundhistorical termHistorical term for an octagonal-shaped burial mound built during the Kofun period (ca. 3rd–7th century).八はっ角かく墳ふんは古こ墳ふん時じ代だい後こう期きの有ゆう力りょく者しゃ
