Boil1, v. i.
v. i. [Fr. bouillir, Pr. & Sp. bullir, Pg. bulir, bolir, It. bollire, from Lat. bullire, to be in a bubbling motion, allied to A. S. weallan, Goth. wailjan, to ferment, boil.]
- To swell, heave, or be agitated by the action of heat;—used of liquids; to bubble; to rise in bubbles; as, the water boils. (Chem.) To pass from a liquid to an aëriform state or vapor, at the boiling point.
- To be similarly agitated by any other cause than heat; to bubble; to effervesce; as, the boiling waves.
He maketh the deep to boil like a pot. Job xli. 31. 3. To be hot or fervid; to be moved or excited; as, his blood boils with anger. Then boiled my breast with flame and burning wrath. Surrey. 4. To be in boiling water; to suffer boiling in water or other liquid. Fillet of a fenny snake In the caldron boil and bake. Shak. To boil away, to evaporate by boiling. — To boil over, to run over the top of a vessel, as liquor when thrown into violent agitation by heat or other cause of effervescence.