古こ墳ふん時じ代だい

noun

Kofun period; Tumulus period

Historical term for the period of Japanese history from around 250 to 538 CE, characterized by the construction of large keyhole-shaped burial mounds (kofun).

• 古こ墳ふん時じ代だいには多おおくの前ぜん方ぽう後こう円えん墳ふんが造つくられた。

  Many keyhole-shaped burial mounds were built during the Kofun period.

• 古こ墳ふん時じ代だいの遺い跡せきから鉄てつ製せいの武ぶ具ぐが出しゅつ土どした。

  Iron weapons were excavated from ruins of the Kofun period.