1. [n]  coldness due to a cold environment
2. [n]  an almost pleasurable sensation of fright; "a frisson of surprise shot through him"
3. [n]  a sudden numbing dread
4. [n]  a sensation of cold that often marks the start of an infection and the development of a fever
5. [adj]  uncomfortably cool; "a chill wind"; "chilly weather"
6. [v]  loose heat; "The air cooled considerably after the thunderstorm"
7. [v]  make cool or cooler; "Chill the food"
8. [v]  depress or discourage; "The news of the city's surrender chilled the soldiers"

1. \Chill\ (ch[i^]l), n. [AS. cele, cyle, from the same root
   as celan, calan, to be cold; akin to D. kil cold, coldness,
   Sw. kyla to chill, and E. cool. See {Cold}, and cf. {Cool}.]
   1. A moderate but disagreeable degree of cold; a disagreeable
      sensation of coolness, accompanied with shivering. ``[A]
      wintry chill.'' --W. Irving.
   2. (Med.) A sensation of cold with convulsive shaking of the
      body, pinched face, pale skin, and blue lips, caused by
      undue cooling of the body or by nervous excitement, or
      forming the precursor of some constitutional disturbance,
      as of a fever.
   3. A check to enthusiasm or warmth of feeling;
      discouragement; as, a chill comes over an assembly.
   4. An iron mold or portion of a mold, serving to cool
      rapidly, and so to harden, the surface of molten iron
      brought in contact with it. --Raymond.
   5. The hardened part of a casting, as the tread of a car
      wheel. --Knight.
   {Chill and fever}, fever and ague.
   

2. \Chill\, a.
   1. Moderately cold; tending to cause shivering; chilly; raw.
            Noisome winds, and blasting vapors chill. --Milton.
   2. Affected by cold. ``My veins are chill.'' --Shak.
   3. Characterized by coolness of manner, feeling, etc.;
      lacking enthusiasm or warmth; formal; distant; as, a chill
      reception.
   4. Discouraging; depressing; dispiriting.
   

3. \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.
   

4. \Chill\, v. i. (Metal.)
   To become surface-hardened by sudden cooling while
   solidifying; as, some kinds of cast iron chill to a greater
   depth than others.
   

CCITT HIgh-Level Language