1. [noun] A person who navigates, especially an officer with that responsibility on a ship or an aircrew member with that responsibility on an aircraft
2. [noun] A sea explorer
3. [noun] A device that navigates an aircraft, automobile or missile
4. [noun] (obsolete): a labourer on an engineering project such as a canal; a navvy
5. [noun] The ship's officer in charge of navigation.
6. [noun] The member of an aircrew who is responsible for the aircraft's course.
7. [noun] In earlier times, a person who explored by ship.
