noun, noun which may take the genitive case particle 'no'
inheritance from parents; family inheritance
Refers to something passed down from parents to children, often over generations. Can be used as a noun or with の to modify another noun.
この土地は親代々のものです。
This land has been passed down in the family for generations.
親代々の財産を守るのは大変
It's hard to protect the family inheritance.