Source : Webster's Revised Unabridged Dictionary (1913)

Spatter \Spat"ter\, v. t. [imp. & p. p. {Spattered}; p. pr. &
   vb. n. {Spattering}.] [From the root of spit salvia.]
   1. To sprinkle with a liquid or with any wet substance, as
      water, mud, or the like; to make wet of foul spots upon by
      sprinkling; as, to spatter a coat; to spatter the floor;
      to spatter boots with mud.

            Upon any occasion he is to be spattered over with
            the blood of his people.              --Burke.

   2. To distribute by sprinkling; to sprinkle around; as, to
      spatter blood. --Pope.

   3. Fig.: To injure by aspersion; to defame; to soil; also, to
      throw out in a defamatory manner.

Source : WordNet®

spattered
     adj 1: covered patchily; often used in combination; "waves dabbled
            with moonlight"; "a blood-spattered room"; "gardens
            splashed with color"; "kitchen walls splattered with
            grease" [syn: {dabbled}, {splashed}, {splashy}, {splattered}]
     2: spattered or spotted with dirt or filth; often used in
        combination; "dingy bespattered walls"; "a
        grease-spattered floor"; "a besplashed coach";
        "mud-splashed trouser legs" [syn: {bespattered}, {besplashed},
         {splashed}]