n. One employed to steer a vessel; a helmsman; a steersman.n. Specifically, a person duly qualified, and licensed by authority, to conduct vessels into and out of a port, or in certain waters, for a fixed rate of fees.n. Figuratively: A guide; a director of another through a difficult or unknown course.n. An instrument for detecting the compass error.n. The cowcatcher of a locomotive.n. One who flies, or is qualified to fly, an airplane, balloon, or other flying machine.n. A short plug at the end of a counterbore to guide the tool. Pilots are sometimes made interchangeable.n. The heading or excavation of relatively small dimensions, first made in the driving of a larger tunnel.n. a filmed or taped episode of a proposed television series, produced as an example of the series. It may be shown only to those television broadcast executives who may decide whether to buy the rights to the series, or aired to test viewer reaction or to interest sponsors. Also called pilot film or pilot tape.v. To direct the course of, as of a ship, where navigation is dangerous.v. Figuratively: To guide, as through dangers or difficulties.v. To fly, or act as pilot of (an aircraft); to operate (an airplane).