director

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. One that supervises, controls, or manages.
2. n. A member of a group of persons chosen to control or govern the affairs of an institution or corporation.
3. n. A person who supervises the creative aspects of a dramatic production or film and instructs the actors and crew.
4. n. The conductor of an orchestra or chorus.
5. n. An electronic device that continually calculates and displays information used for firing weapons at moving targets, such as missiles or aircraft.

Century Dictionary and Cyclopedia

1. n. One who directs; one who guides, superintends, governs, or manages.
2. n. Specifically— One of a number of persons, appointed or elected under provision of law, having authority to manage and direct the affairs of a corporation or company. All the directors collectively constitute a board of directors. They are agents of the corporation, and not of the stockholders. Generally they are elected for one year.
3. n. In music, the leader or conductor of a company of vocal or instrumental performers: as, a choir director; an orchestral director.
4. n. Anything that directs or controls.
5. n. Specifically — In surgery, a grooved probe, intended to direct the edge of the knife or scissors in opening sinuses or fistulæ or making incisions generally, In electricity, a metallic instrument on a glass handle connected by a chain with the pole of a battery, and applied to the part of the body to which a shock is to be sent.
6. n. In geometry, a fixed guiding line.
7. n. The small printed or written letter inserted as a guide in the space to be afterward filled by the designer or illuminator of the large initial.

Wiktionary

1. n. One who directs; the person in charge of managing a department or directorate (e.g., director of engineering), project, or production (as in a show or film, e.g., film director).
2. n. A device that displays graphical information concerning the targets of a weapons system in real time.
3. n. chemistry The common axis of symmetry of the molecules of a liquid crystal.

GNU Webster's 1913

1. n. One who, or that which, directs; one who regulates, guides, or orders; a manager or superintendent.
2. n. One of a body of persons appointed to manage the affairs of a company or corporation.
3. n. (Mech.) A part of a machine or instrument which directs its motion or action.
4. n. (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.

WordNet 3.0

1. n. the person who directs the making of a film
2. n. someone who supervises the actors and directs the action in the production of a show
3. n. member of a board of directors
4. n. the person who leads a musical group
5. n. someone who controls resources and expenditures