Source : Webster's Revised Unabridged Dictionary (1913)

Plow \Plow\, Plough \Plough\, v. t. [imp. & p. p. {Plowed}
   (ploud) or {Ploughed}; p. pr. & vb. n. {Plowing} or
   {Ploughing}.]
   1. To turn up, break up, or trench, with a plow; to till
      with, or as with, a plow; as, to plow the ground; to plow
      a field.

   2. To furrow; to make furrows, grooves, or ridges in; to run
      through, as in sailing.

            Let patient Octavia plow thy visage up With her
            prepared nails.                       --Shak.

            With speed we plow the watery way.    --Pope.

   3. (Bookbinding) To trim, or shave off the edges of, as a
      book or paper, with a plow. See {Plow}, n., 5.

   4. (Joinery) To cut a groove in, as in a plank, or the edge
      of a board; especially, a rectangular groove to receive
      the end of a shelf or tread, the edge of a panel, a
      tongue, etc.

   {To plow in}, to cover by plowing; as, to plow in wheat.

Source : WordNet®

plowing
     n : tilling the land with a plow; "he hired someone to do the
         plowing for him" [syn: {ploughing}]