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

    A chief; a leader.

  • Dux
    Black's Law Dictionary: 2nd Edition

    In Roman law. A leader or mllitary commander. The commander of an army. Dig. 3, 2, 2, pr. In feudal and old European law. Duke; a title of honor, or order of nobility. 1 Bl. Comm. 307; Crabb, Eng. Law, 236. In later law. A military governor of a province. See Cod. 1, 27, 2. A military officer having charge of the borders or frontiers of the empire, called "dux limitis." Cod. 1, 49, 1, pr. At this period, tEe word began to be used as a title of honor or dignity.