DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Easting \East"ing\, n. (Naut. & Surv.)
      The distance measured toward the east between two meridians
      drawn through the extremities of a course; distance of
      departure eastward made by a vessel.
      [1913 Webster]