ACTOR

actor. 1. One who acts; a person whose conduct is in question. 2. Archaic. A male plaintiff. 3. Hist. An advocate or pleader; one who acted for another in legal matters. Cf. REUS(1). 4. Roman law. (ital.) A person who sues; a claimant. — Also termed (in sense 4) petitor. Pl. (in sense 4) actores.