chillness

noun

1. a feeling of coldness that makes one shiver; uncomfortable coolness
2. a moderate coldness
3. a damper on enthusiasm; discouraging influence
4. a feeling of sudden fear, apprehension, etc.
5. coolness of manner; unfriendliness
6. Metallurgy a cooled iron mold placed in contact with that part of a casting which is to be cooled rapidly and thus hardened on the surface

adjective

intransitive verb

1. to become cool or cold
2. to be seized with a chill; shake or shiver, as with cold or fear
3. ☆ Slang: usually with out
   1. to rest or relax
   2. to calm down: usually used in the imperative
4. Metallurgy to become hardened on the surface by rapid cooling

transitive verb

1. to make cool or cold
2. to cause a chill in
3. to check (enthusiasm, etc.)
4. to depress; dispirit
5. Metallurgy to harden (metal) on the surface by rapid cooling