SE in slang uses
[late 19C+] to take a drink, to empty a glass (or bottle) by drinking its contents.
see under belt n.
see under bomb n.
1. to hit hard; to knock out.
2. to give up on.
3. to take decisive action against.
4. to reprimand severely, to put an end to someone’s misbehaviour.
5. to murder, to kill.
6. (Aus.) of a man, to have sexual intercourse.