Definition of "boil over" in English

Verb

1. To boil to such an extent as to overflow its container.

   • I forgot about the rice and it boiled over.

2. To reach the point where aggressive action is taken.

3. To act aggressively angry.

   • He boiled over all night.

4. To buck aggressively.

   • The stallion boiled over, throwing Robert from her back.