Source : Webster's Revised Unabridged Dictionary (1913)

Track \Track\, n. [OF. trac track of horses, mules, trace of
   animals; of Teutonic origin; cf.D. trek a drawing, trekken to
   draw, travel, march, MHG. trechen, pret. trach. Cf. {Trick}.]
   1. A mark left by something that has passed along; as, the
      track, or wake, of a ship; the track of a meteor; the
      track of a sled or a wheel.

            The bright track of his fiery car.    --Shak.

   2. A mark or impression left by the foot, either of man or
      beast; trace; vestige; footprint.

            Far from track of men.                --Milton.

   3. (Zo["o]l.) The entire lower surface of the foot; -- said
      of birds, etc.

   4. A road; a beaten path.

            Behold Torquatus the same track pursue. --Dryden.

   5. Course; way; as, the track of a comet.

   6. A path or course laid out for a race, for exercise, etc.

   7. (Railroad) The permanent way; the rails.

   8. [Perhaps a mistake for tract.] A tract or area, as of
      land. [Obs.] ``Small tracks of ground.'' --Fuller.

   {Track scale}, a railway scale. See under {Railway}.