(intransitive, slang) To relax or take time out; to calm down. / (intransitive, slang, somewhat dated) To hang out; spend time together with another person or group.

Alternative spelling of chillout

Inducing fear or nervousness; frequently used of a work of fiction.

(meteorology) A measure of how cold the atmosphere feels, taking not just actual temperature into account, but also wind, which can make the air feel considerably colder at the same air temperature.

plural of chill pill

(law) A discouraging effect, especially on certain forms of officially legal speech. / Synonym of windchill.

plural of chilling effect

Very cold. / (figuratively) With a strong physical or psychological unpleasant effect.

(rare) Alternative spelling of spine-chilling

(idiomatic) To provoke an uneasy feeling which stops a conversation, as by an uncalled act or word.