墳塋 is read as ふんえい (funei) and means grave.
ふんえい
funei
ふんぼ
grave
ふんきゅう
tumulus
こふん
ancient burial mound
ぜんぽうこうえんふん
keyhole-shaped ancient Japanese tumulus
じょうえんかほうふん
burial mound with square flat base and round top
こふんじだい
Kofun period (of Japanese history, 250-538 CE)
こふんじん
Kofun people
はっかくふん
octagonal burial mound (Kofun period)
ほうふん
flat-topped burial mound
えんふん
round burial mound