Definitions from Black's Law Dictionary: 2nd Edition and Ballentine's Law Dictionary as are available for each term in each dictionary.
  • Ballentine's Law Dictionary

    A son.

  • Black's Law Dictionary: 2nd Edition

    Lat. A son; a child. A distinction was sometimes made, in the civil law, between "filii" and "liberifi' the latter word including grandchildren, (nepotes,) the former not. Inst. 1, 14, 5. But, according to Paulus and Julianus, they were of equally extensive import. Dig. 50, 16, 84; Id. 50, 16,
    —Filius familias. In the civil law. The son of a family; an unemancipated son. Inst. 2, 12, pr.; Id. 4, 5, 2; Story, Confl. Laws, § 61.
    —Filius mulieratus. In old English law. The eldest legitimate son of a woman, who previously had an illegitimate son by his father. Glanv. lib. 7, C. 1. Otherwise called "mulier." 2 Bl. Comm. 248.
    —Filius nullius. The son of nobody; i. e., a bastard.
    —Filius populi. A son of the people ; a natural child.