Source : Webster's Revised Unabridged Dictionary (1913)

Shadowing \Shad"ow*ing\, n.
   1. Shade, or gradation of light and color; shading.
      --Feltham.

   2. A faint representation; an adumbration.

            There are . . . in savage theology shadowings,
            quaint or majestic, of the conception of a Supreme
            Deity.                                --Tylor.

Shadow \Shad"ow\, v. t. [imp. & p. p. {Shadowed}; p. pr. & vb.
   n. {Shadowing}.] [OE. shadowen, AS. sceadwian. See {adow},
   n.]
   1. To cut off light from; to put in shade; to shade; to throw
      a shadow upon; to overspead with obscurity.

            The warlike elf much wondered at this tree, So fair
            and great, that shadowed all the ground. --Spenser.

   2. To conceal; to hide; to screen. [R.]

            Let every soldier hew him down a bough. And bear't
            before him; thereby shall we shadow The numbers of
            our host.                             --Shak.

   3. To protect; to shelter from danger; to shroud.

            Shadowing their right under your wings of war.
                                                  --Shak.

   4. To mark with gradations of light or color; to shade.

   5. To represent faintly or imperfectly; to adumbrate; hence,
      to represent typically.

            Augustus is shadowed in the person of [AE]neas.
                                                  --Dryden.

   6. To cloud; to darken; to cast a gloom over.

            The shadowed livery of the burnished sun. --Shak.

            Why sad? I must not see the face O love thus
            shadowed.                             --Beau. & Fl.

   7. To attend as closely as a shadow; to follow and watch
      closely, especially in a secret or unobserved manner; as,
      a detective shadows a criminal.

Source : WordNet®

shadowing
     adj : following surreptitiously; keeping under surveillance;
           "always on guard against shadowing submarines" [syn: {tailing}]
     n : the act of following someone secretly [syn: {tailing}]

Source : Free On-Line Dictionary of Computing

shadowing
     
        {aliasing}