boil over 1. 沸溢，煮潽 Mommy, I promise I won't let the milk boilover this time. 妈妈，我保证这次再也不让牛奶煮潽了。 2. 激动；发怒；(情绪)失去控制，爆发 He was boiling over with rage. 他大发雷霆。 In several cities, grievance has boiled over this spring into violence. 在几个城市里，今春不满情绪已失去控制而演变成了暴力行动。