The Collaborative International Dictionary of English v.0.48:

Navigator \Nav"i*ga`tor\, n.
   One who navigates or sails; esp., one who direct the course
   of a ship, or one who is skillful in the art of navigation;
   also, a book which teaches the art of navigation; as,
   Bowditch's Navigator.
   [1913 Webster]

WordNet (r) 3.0 (2006):

navigator
    n 1: the ship's officer in charge of navigation [syn: sailing
         master, navigator]
    2: the member of an aircrew who is responsible for the
       aircraft's course
    3: in earlier times, a person who explored by ship

Moby Thesaurus II by Grady Ward, 1.0:

130 Moby Thesaurus words for "navigator":
   AB, Ancient Mariner, Argonaut, Dylan, Flying Dutchman, Gyropilot,
   Neptune, OD, Poseidon, Varuna, able seaman, able-bodied seaman,
   aerial photographer, aircrew, aircrewman, automatic pilot,
   avigator, bakehead, belly gunner, black gang, bluejacket,
   boatheader, boatsteerer, boatswain, boilerman, bombardier,
   buccaneer, bungs, cabin boy, captain, chief engineer, chief mate,
   chips, cicerone, commander, commissary steward, complement,
   courier, cowherd, coxswain, crew, crew chief, deck officer,
   deckhand, deckie, deep-sea man, dragoman, drover,
   fair-weather sailor, fireman, fisherman, flight attendant,
   flight crew, goatherd, guide, guidepost, guider, gun loader,
   gunner, hand, hearty, helmsman, herd, herdsman, hospital steward,
   hostess, jack, jack afloat, jack-tar, jacky, landing signalman,
   limey, lobsterman, machine gunner, mail orderly, mariner, master,
   mate, matelot, mercury, meteorologist, naval officer,
   navigating officer, oiler, patron, pilot, pipes, pirate, pointer,
   privateer, purser, quartermaster, radio operator, river pilot,
   roustabout, sailing master, sailor, salt, sea dog, sea rover,
   seafarer, seafaring man, seaman, second mate, shepherd, shipman,
   shipmaster, skipper, snip, snips, sparks, steerer, steersman,
   steward, stewardess, stoker, tar, the Old Man, torpedoman,
   tour director, tour guide, viking, watch, watch officer, water dog,
   whaler, wheelman, windjammer, windsailor, yeoman



The Free On-line Dictionary of Computing (30 December 2018):

Netscape Navigator
Navigator

    /Mozilla/ (Often called just
   "Netscape") A web browser from Netscape
   Communications Corporation.  The first beta-test version
   was released free to the Internet on 13 October 1994.
   Netscape evolved from NCSA Mosaic (with which it shares at
   least one author) and runs on the X Window System under
   various versions of Unix, on Microsoft Windows and on the
   Apple Macintosh.

   It features integrated support for sending electronic mail
   and reading Usenet news, as well as RSA encryption to
   allow secure communications for commercial applications such
   as exchanging credit card numbers with net retailers.  It
   provides multiple simultaneous interruptible text and image
   loading; native inline JPEG image display; display and
   interaction with documents as they load; multiple independent
   windows.  Netscape was designed with 14.4 kbps modem links in
   mind.

   You can download Netscape Navigator for evaluation, or for
   unlimited use in academic or not-for-profit environments.  You
   can also pay for it.

   Version: 1.0N.

   (ftp://ftp.netscape.com/netscape/).

   E-mail: .

   (1995-01-25)