What does 古墳 mean?
古墳 is a Japanese noun meaning “ancient tomb” in English. It is written as 古墳 in kanji, こふん in hiragana, and kofun in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
高松塚古墳は、奈良県明日香村に存在する古墳。
The Takamatsuzuka burial mound is located in Asukamura, Nara prefecture.