n.
   - an unpleasant feeling of coldness.
 - a feverish cold.
 - a metal mould designed to aid cooling of metal during casting.
 
v.
   - make cold. 
▸cool (food or drink) in a refrigerator.
 - horrify or frighten.
 - 
(usu. chill out)
 informal calm down and relax.
 
adj.
 chilly.
 
  Derivative
  
    - chilling adj.
  - chillingly adv.
  - chillness n.
  - chillsome adj. (literary).
 
   
  Etymology
  OE cele, ciele ‘cold, coldness’, of Gmc origin; rel. to cold.