(transitive and intransitive) To reduce in volume by boiling. / (intransitive) To become reduced (to the most central elements or ingredients: to the essence, core, or implication for action).

(US) To heat something until it reaches its boiling point. / (figuratively) To bring (a debate, etc.) to a peak of activity or emotion.

plural of boil up

Extremely angry; furious.

Synonym of boiling hot

A small cylindrical vessel used to heat substances in the flame of a Bunsen burner.

plural of boiling tube

(medicine, historical) A form of leishmaniasis once prevailing in India, as among the British troops, and especially in Delhi.

plural of Delhi boil

(idiomatic) extremely angry