1.
heir; successor
A person who inherits and carries on a family business, household, or tradition. Emphasizes the continuation of a family line or enterprise rather than simply inheriting property.
Compound of 跡 (trace, footsteps) + 取り (taking). Literally "one who takes over the footsteps." Strongly associated with family businesses and traditional households.
In traditional Japanese society, the 跡取り (usually the eldest son) was expected to inherit the family home, business, and responsibilities. This concept remains relevant today, especially for family-run businesses, farms, and traditional arts.