The Collaborative International Dictionary of English v.0.48:

Navigation \Nav`i*ga"tion\, n. [L. navigatio: cf. F.
   navigation.]
   1. The act of navigating; the act of passing on water in
      ships or other vessels; the state of being navigable.
      [1913 Webster]

   2.
      (a) The science or art of conducting ships or vessels from
          one place to another, including, more especially, the
          method of determining a ship's position, course,
          distance passed over, etc., on the surface of the
          globe, by the principles of geometry and astronomy.
      (b) The management of sails, rudder, etc.; the mechanics
          of traveling by water; seamanship.
          [1913 Webster]

   3. Ships in general. [Poetic] --Shak.
      [1913 Webster]

   Aerial navigation, the act or art of sailing or floating in
      the air, as by means of airplanes or ballons; aviation;
      aeronautic.

   Inland navigation, Internal navigation, navigation on
      rivers, inland lakes, etc.
      [1913 Webster]

WordNet (r) 3.0 (2006):

navigation
    n 1: the guidance of ships or airplanes from place to place
         [syn: navigation, pilotage, piloting]
    2: ship traffic; "the channel will be open to navigation as soon
       as the ice melts"
    3: the work of a sailor [syn: seafaring, navigation,
       sailing]

The Free On-line Dictionary of Computing (19 January 2023):

navigation
navigating

    Finding your way around a website.
   Many sites have some kind of navigation bar.  One of
   the first web browsers was called Netscape Navigator.

   (2008-11-17)