repaying parental care; filial return of kindness
A literary term for the idea that children should care for their aging parents in return for the care they received. Often used in the set phrase 反哺の孝 (はんぽのこう), 'filial piety of returning care'. Not an everyday conversational word; more common in formal or classical contexts.
The phrase 'hanpo no kō' is a classical idiom expressing the repayment of kindness to one's parents.