To heat a liquid until it reaches its boiling point and begins to turn into vapor. She put the kettle on to boil water for tea.
To cook food by immersing it in boiling water or other boiling liquid. He decided to boil the eggs for breakfast.
To become agitated or angry. She could feel her temper start to boil as the argument continued.
To reach or cause to reach a state of intense activity or excitement. The crowd began to boil with anticipation as the band took the stage.