because it has a lot of pressure in it

To pinch someone's pressure point, find their pressure point. From there, pinch it with your thumb and pointer finger. You can also just apply strong pressure to it.

The boiling point is that temperature when the SATURATEDvapor pressure of a liquidbecomes equal tothe surrounding pressure.
Thus the higher the sorrounding pressure, the higher the boiling point.

Boiling point is when the liquids pressure equals the pressure of the atmosphere.

The high point on a sound waveform is the point of maximum pressure, the pressure peak.