Definition of "erupt" in English

verb

1. (intransitive) To eject something violently (such as lava or water, as from a volcano or geyser).

   • The volcano erupted, spewing lava across a wide area.

2. (intransitive) To burst forth; to break out.

   • The third molar tooth erupts late in most people, and sometimes does not appear at all.

3. (intransitive, figuratively) To spontaneously release pressure or tension.

   • The crowd erupted in anger.

4. (intransitive, biology) (Of birds, insects, etc.) To suddenly appear in a certain region in large numbers.