What is the meaning of the word "boil"?

Definitions:

the temperature at which a liquid boils at sea level noun
- they brought the water to a boil
to be agitated verb
- I boiled with rage.
to be in an agitated emotional state verb
- The principal boiled about the latest prank.
to bring to, or maintain at, the boiling point verb
- To make a reduction, you should boil the liquid until it evaporates.
to come to the boiling point and change from a liquid to vapor verb
- Water boils at 100 degrees Celsius.
to immerse or be immersed in a boiling liquid, often for cooking purposes verb
- I boil potatoes every Monday.