Director Di*rect"or, n. [Cf. F. directeur.] 1. One who, or that which, directs; one who regulates, guides, or orders; a manager or superintendent. In all affairs thou sole director. --Swift. 2. One of a body of persons appointed to manage the affairs of a company or corporation; as, the directors of a bank, insurance company, or railroad company. What made directors cheat in South-Sea year? --Pope. 3. (Mech.) A part of a machine or instrument which directs its motion or action. 4. (Surg.) A slender grooved instrument upon which a knife is made to slide when it is wished to limit the extent of motion of the latter, or prevent its injuring the parts beneath.