Oppressor
Defined in 3 dictionaries — Bouvier (1914), Black's (1910), Black's (1891)
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
One who having public authority uses it unlawfully to tyrannize over another: as, if he keep him in prison until he shall do something which he not lawfully bound to do. To charge a magistrate with being an oppressor is actionable; 1 Stark. SI. 185.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
A publlc officer who unlawfully uses his authority by way of oppression, (q. v.)
A Dictionary of Law
Henry Campbell Black · 1891
A public officer who unlawfully uses his authority by way of oppression, (g. 0.)