- boilboil1 [boil]vi.[ME boilen < OFr boillir < L bullire < bulla, a bubble, knob; prob. < IE * bu-, var. of echoic base * beu-, * bheu-, to blow up, cause to swell]1. to bubble up and vaporize over direct heat2. to reach the vaporizing stage3. to seethe or churn like a boiling liquid4. to be agitated, as with rage5. to cook in boiling water or other liquidvt.1. to heat to the boiling point2. to cook, process, or separate in boiling water or other liquidn.the act or state of boiling——————boil awayto evaporate as a result of boiling——————boil down1. to lessen in quantity by boiling, esp. so as to change consistency2. to make more terse; condense; summarize——————boil down toto mean, when summarized; amount to [what it all boils down to is more unemployment]——————boil over1. to come to a boil and spill over the rim2. to lose one's temper; get excitedSYN.- BOIL1, the basic word, refers to the vaporization of a liquid over direct heat or, metaphorically, to great agitation, as with rage [it made my blood boil]; SEETHE suggests violent boiling with much bubbling and foaming or, in an extended sense, excitement [the country seethed with rebellion ]; SIMMER implies a gentle, continuous cooking at or just below the boiling point or, metaphorically, imminence of eruption, as in anger or revolt; STEW1 refers to slow, prolonged boiling or, in an extended colloquial sense, unrest caused by worry or anxietyboil2 [boil]n.[orig., & still dial., bile < ME byle < OE byle, byl (akin to Ger beule) < IE base of BOIL1]an inflamed, painful, pus-filled swelling on the skin, caused by localized infection; furuncle
English World dictionary. V. Neufeldt. 2014.