What is the meaning of the word "fix"?

Definitions:

a determination of the place where something is noun
- We got a good fix on the target.
an exemption granted after influence (e.g., money) is brought to bear noun
- collusion resulted in tax fixes for gamblers
decide upon or fix definitely verb
- fix the variables
influence an event or its outcome by illegal means verb
- fix a race
informal terms for a difficult situation noun
- The dog got into a terrible fix.
make fixed, stable or stationary verb
- let's fix the picture to the frame
set or place definitely verb
- Let's fix the date for the party!
something craved, especially an intravenous injection of a narcotic drug noun
- They needed a fix of chocolate after abstaining from sweets.