The Collaborative International Dictionary of English v.0.48:

Chilliness \Chill"i*ness\, n.
   1. A state or sensation of being chilly; a disagreeable
      sensation of coldness.
      [1913 Webster]

   2. A moderate degree of coldness; disagreeable coldness or
      rawness; as, the chilliness of the air.
      [1913 Webster]

   3. Formality; lack of warmth.
      [1913 Webster]

WordNet (r) 3.0 (2006):

chilliness
    n 1: the property of being moderately cold; "the chilliness of
         early morning" [syn: chilliness, coolness, nip]
    2: a lack of affection or enthusiasm; "a distressing coldness of
       tone and manner" [syn: coldness, coolness, frigidity,
       frigidness, iciness, chilliness]