Source : Webster's Revised Unabridged Dictionary (1913)

Shock \Shock\, v. t. [imp. & p. p. {Shocked}; p. pr. & vb. n.
   {Shocking}.] [OE. schokken; cf. D. schokken, F. choquer, Sp.
   chocar. [root]161. Cf. {Chuck} to strike, {Jog}, {Shake},
   {Shock} a striking, {Shog}, n. & v.]
   1. To give a shock to; to cause to shake or waver; hence, to
      strike against suddenly; to encounter with violence.

            Come the three corners of the world in arms, And we
            shall shock them.                     --Shak.

            I shall never forget the force with which he shocked
            De Vipont.                            --Sir W.
                                                  Scott.

   2. To strike with surprise, terror, horror, or disgust; to
      cause to recoil; as, his violence shocked his associates.

            Advise him not to shock a father's will. --Dryden.

Shocking \Shock"ing\, a.
   Causing to shake or tremble, as by a blow; especially,
   causing to recoil with horror or disgust; extremely offensive
   or disgusting.

         The grossest and most shocking villainies. --Secker.
   -- {Shock"ing*ly}, adv. -- {Shock"ing*ness}, n.

Source : WordNet®

shocking
     adj 1: glaringly vivid and graphic; marked by sensationalism;
            "lurid details of the accident" [syn: {lurid}]
     2: giving offense to moral sensibilities and injurious to
        reputation; "scandalous behavior"; "the wicked rascally
        shameful conduct of the bankrupt"- Thackeray; "the most
        shocking book of its time" [syn: {disgraceful}, {scandalous},
         {shameful}]