Learner's definition of BOILING POINT
1 [count] : the temperature at which a liquid begins to boil 2 : the point at which people might do or say something violent or might take some definite or extreme action because of anger, disagreement, etc.
[count] — usually singular
The incident brought tensions to a boiling point.
He sensed he had reached his boiling point.
(chiefly US) Tempers are reaching the boiling point.