Director

Part of speech: noun (n.)

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. A part of a machine or instrument which directs its motion or action.

4. 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.