(n): a person authorized to serve in a position of authority on a vessel
(n): the member of an aircrew who is responsible for the aircraft's course
(n): a member of an aircrew
(n): in earlier times, a person who explored by ship
(n): someone who travels into little known regions (especially for some scientific purpose)
See also navvy. Now rare meaning: a construction worker; specifically a labourer employed in the construction of (originally) a canal, (now freq.) a road, railway, etc.
Usage:
Navigator, Navigator rise up and be strong
The morning is here and there's work to be done.
Take your pick and your shovel and the bold dynamite
For to shift a few tons of this earthly delight...
Their mark on this land is still seen and still laid
The way for a commerce where vast fortunes were made
The supply of an Empire where the sun never set
Which is now deep in darkness, but the railway's there yet.
--"Navigator," the Pogues, lyrics c. 1985 Shane Macgowan
Usage: 1969 J. FOWLES _The French Lieutenant's Woman_ xii. 90 ‘I feel like an Irish navigator transported into a queen's boudoir,’ complained Charles, as he kissed Ernestina's fingers in a way that showed he would in fact have made a very poor Irish navvy.