Definition of: justiciary

(jus·tish′ē·er′ē) adjective
Pertaining to law or the administration of justice.
—noun plural ·ar·ies
1. A high judicial officer; a judge.
2. In medieval England, a high officer, or king's deputy, who, during the time of the Norman kings, exercised both administrative and judicial powers. [<Med. L justiciarius a judge <justicia JUSTICE]