Source : Webster's Revised Unabridged Dictionary (1913)

Evil \E*vil\a. [OE. evel, evil, ifel, uvel, AS. yfel; akin to
   OFries, evel, D. euvel, OS. & OHG. ubil, G. ["u]bel, Goth.
   ubils, and perh. to E. over.]
   1. Having qualities tending to injury and mischief; having a
      nature or properties which tend to badness; mischievous;
      not good; worthless or deleterious; poor; as, an evil
      beast; and evil plant; an evil crop.

            A good tree can not bring forth evil fruit. --Matt.
                                                  vii. 18.

   2. Having or exhibiting bad moral qualities; morally corrupt;
      wicked; wrong; vicious; as, evil conduct, thoughts, heart,
      words, and the like.

            Ah, what a sign it is of evil life, When death's
            approach is seen so terrible.         --Shak.

   3. Producing or threatening sorrow, distress, injury, or
      calamity; unpropitious; calamitous; as, evil tidings; evil
      arrows; evil days.

            Because he hath brought up an evil name upon a
            virgin of Israel.                     --Deut. xxii.
                                                  19.

            The owl shrieked at thy birth -- an evil sign.
                                                  --Shak.

            Evil news rides post, while good news baits.
                                                  --Milton.

   {Evil eye}, an eye which inflicts injury by some magical or
      fascinating influence. It is still believed by the
      ignorant and superstitious that some persons have the
      supernatural power of injuring by a look.

            It almost led him to believe in the evil eye. --J.
                                                  H. Newman.

   {Evil speaking}, speaking ill of others; calumny;
      censoriousness.

   {The evil one}, the Devil; Satan.

   Note: Evil is sometimes written as the first part of a
         compound (with or without a hyphen). In many cases the
         compounding need not be insisted on. Examples: Evil
         doer or evildoer, evil speaking or evil-speaking, evil
         worker, evil wishing, evil-hearted, evil-minded.

   Syn: Mischieveous; pernicious; injurious; hurtful;
        destructive; wicked; sinful; bad; corrupt; perverse;
        wrong; vicious; calamitous.

Evil eye \E"vil eye`\
   See {Evil eye} under {Evil}, a.

Source : WordNet®

evil eye
     n : a look that is believed to have the power of inflicting harm