What is the meaning of Boiling?

present participle and gerund of boil

The process of changing the state of a substance from liquid to gas by heating it to its boiling point.

A turmoil; a disturbance like that of bubbling water.

An animation style with constantly changing wavy outlines, giving a shimmering or wobbling appearance.

That boils or boil.

Of a thing: extremely hot or active.

Of a person: feeling uncomfortably hot.

Of the weather: very hot.

Extremely

Source: wiktionary.org