The Collaborative International Dictionary of English v.0.48:

Chilling \Chill"ing\, a.
   Making chilly or cold; depressing; discouraging; cold;
   distant; as, a chilling breeze; a chilling manner. --
   Chill"ing"ly, adv.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

            When winter chilled the day.          --Goldsmith.
      [1913 Webster]

   2. To check enthusiasm or warmth of feeling of; to depress;
      to discourage.
      [1913 Webster]

            Every thought on God chills the gayety of his
            spirits.                              --Rogers.
      [1913 Webster]

   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.
      [1913 Webster]

WordNet (r) 3.0 (2006):

chilling
    adj 1: provoking fear terror; "a scary movie"; "the most
           terrible and shuddery...tales of murder and revenge"
           [syn: chilling, scarey, scary, shivery,
           shuddery]
    n 1: the process of becoming cooler; a falling temperature [syn:
         cooling, chilling, temperature reduction]