1. of, pertaining to, or befitting a son or daughter: filial obedience.
2. noting or having the relation of a child to a parent.
3. Genetics . pertaining to the sequence of generations following the parental generation
In Confucian ideals, filial piety (Chinese: 孝; pinyin: xiào) is one of the virtues to be held above all else: a respect for the parents and ancestors.