Source : Webster's Revised Unabridged Dictionary (1913)

Chilling \Chill"ing\, a.
   Making chilly or cold; depressing; discouraging; cold;
   distant; as, a chilling breeze; a chilling manner. --
   {Chill"ing"ly}, adv.

Chill \Chill\, v. t. [imp. & p. p. {Chilled} (ch[i^]ld); p. pr.
   & vb. n. {Chilling}.]
   1. To strike with a chill; to make chilly; to cause to
      shiver; to affect with cold.

            When winter chilled the day.          --Goldsmith.

   2. To check enthusiasm or warmth of feeling of; to depress;
      to discourage.

            Every thought on God chills the gayety of his
            spirits.                              --Rogers.

   3. (Metal.) To produce, by sudden cooling, a change of
      crystallization at or near the surface of, so as to
      increase the hardness; said of cast iron.

Source : WordNet®

chilling
     adj : so scary as to cause chills and shudders; "the most terrible
           and shuddery...tales of murder and revenge" [syn: {scarey},
            {scary}, {shivery}, {shuddery}]
     n : the process of becoming cooler; a falling temperature [syn:
         {cooling}, {temperature reduction}]