appanage
/ˈæpəneɪdʒ/Definitions
1. noun
A portion of land or income assigned to a person, especially a younger son of a noble family, as their share of their father’s estate.
“The younger son received a significant appanage from his father’s vast lands.”
2. verb
To assign or provide with an appanage.
“The king appanaged his younger son with a large tract of land.”