Merriam-Webster Collegiate Dictionary - chill

 I. noun  Etymology: Middle English chile ~, frost, from Old English ciele; akin to Old English ceald cold  Date: before 12th century  1.  a. a sensation of cold accompanied by shivering  b. a disagreeable sensation of coldness  2. a moderate but disagreeable degree of cold  3. a check to enthusiasm or warmth of feeling felt the ~ of his opponent's stare  II. adjective  Date: 14th century  1.  a. moderately cold  b. cold, raw  2. affected by cold ~ travelers  3. distant, formal a ~ reception  4. depressing, dispiriting ~ penury — Thomas Gray  • ~ness noun  III. verb  Date: 14th century  intransitive verb  1.  a. to become cold  b. to shiver or quake with or as if with cold  2. to become taken with a ~  3.  a. ~ out  b. hang 12  transitive verb  1.  a. to make cold or ~y spectators ~ed by a cold wind  b. to make cool especially without freezing ~ a bottle of wine  2. to affect as if with cold ; dispirit, discourage were ~ed by the drab austerity — William Attwood  • ~ingly adverb