n. 1. The temperature at which a liquid boils. The boiling point of water is 272 sup o /sup Fahrenheit. 2. The time when you become very angry. He has a low boiling point. After being teased for a long time, John reached the boiling point. When John made the same mistake for the fourth time, his teacher reached the boiling point.
Compare: BLOW UP(1b), MAKE ONE'S BLOOD BOIL.