Source : Webster's Revised Unabridged Dictionary (1913)

Fairway \Fair"way`\, n.
   The navigable part of a river, bay, etc., through which
   vessels enter or depart; the part of a harbor or channel
   ehich is kept open and unobstructed for the passage of
   vessels. --Totten.

Source : WordNet®

fairway
     n 1: the area between the tee and putting green where the grass
          is cut short
     2: the usual course taken by vessels through a harbor or costal
        waters
     3: a tract of ground free of obstacles to movement