noun
hidden treasure; secret treasure
Refers to a treasure that is kept hidden or secret, often with a sense of preciousness or mystery.
その洞窟には古代の秘宝が隠されていると言われている。
It is said that an ancient hidden treasure is concealed in that cave.
彼は家族に代々伝わる秘宝を守っている。
He protects a secret treasure that has been passed down in his family for generations.