Source : Webster's Revised Unabridged Dictionary (1913)

Copy \Cop"y\, v. t. [imp. & p. p. {Copied}; p. pr. & vb. n.
   {Copying}.] [Cf. F. copir, fr. LL. copiare. See {Copy}, n.]
   1. To make a copy or copies of; to write; print, engrave, or
      paint after an original; to duplicate; to reproduce; to
      transcribe; as, to copy a manuscript, inscription, design,
      painting, etc.; -- often with out, sometimes with off.

            I like the work well; ere it be demanded (As like
            enough it will), I'd have it copied.  --Shak.

            Let this be copied out, And keep it safe for our
            remembrance.                          --Shak.

   2. To imitate; to attempt to resemble, as in manners or
      course of life.

            We copy instinctively the voices of our companions,
            their accents, and their modes of pronunciation.
                                                  --Stewart.

Copying \Cop"y*ing\, a. & n.
   From {Copy}, v.

   {Copying ink}. See under {Ink}.

   {Copying paper}, thin unsized paper used for taking copies of
      letters, etc., in a copying press.

   {Copying press}, a machine for taking by pressure, an exact
      copy of letters, etc., written in copying ink.

Source : WordNet®

copying
     n : an act of copying