Green’s Dictionary of Slang

chill v.2

[fig. uses of SE]

1. [1930s] (US Und.) to knock out or down.

2. [1940s] (US Black) in fig. use of sense 1, to amaze.

3. [1930s–40s] (US Und.) to stack a deck of cards prior to using them in a cheating card-game.

4. [1930s+] to murder, to assassinate.

5. [1930s+] to give up on, to abandon, to ignore.

6. [1930s+] (US Und.) to deal with, to nullify, e.g. a criminal charge.

7. [1940s] (US Und.) for the victim of a confidence trick to lose interest.

8. [1940s+] (orig. US) to become emotionally cold, withdrawn.

9. [1940s+] (US) to tolerate, to make no fuss about.

10. see chill (out) v.

In phrases

chill (for) (v.)

[1900s–50s] (US) to (pretend to) ignore.

chill (out) (v.)

see separate entry.

chill someone’s actions (v.)

[1980s] (US black) to undermine someone’s plans.