noun
heirloom; family treasure
A valuable object passed down through generations in a family.
この茶碗は祖母から受け継いだ家宝です。
This tea bowl is an heirloom I inherited from my grandmother.
家宝を守るために、火事のときは真っ先に持ち出した。
To protect the family treasure, I grabbed it first when there was a fire.