Orator
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
The plaintiff In a cause or matter in chancery, when addressing or petitioning the court, used to style himself "orator," and, when a woman, "oratrix." But these terms have long gone into disuse, and the customary phrases now are "plaintiff" or "petitioner." In Roman law, the term denoted an advocate.