Pilot

1. 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.
2. Figuratively: A guide; a director of another through a difficult or unknown course.
3. Figuratively: To guide, as through dangers or difficulties.
4. One employed to steer a vessel; a helmsman; a steersman.
5. To direct the course of, as of a ship, where navigation is dangerous.
6. An instrument for detecting the compass error.
7. The cowcatcher of a locomotive.