Boil means to change or be changed from a liquid to a gas, or to get very mad.(verb)
The definition of boil is the act of becoming very angry or changing from liquid to gas, or a boil is a swelling on the skin full of pus.(noun)
See boil in Webster's New World College Dictionary
Origin: 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
Origin: orig., & still dial., bile < ME byle < OE byle, byl (akin to Ger beule) < IE base of boil
See boil in American Heritage Dictionary 4
verb boiled, boil·ing, boils verb, intransitive
Origin: Middle English boillen
Origin: , from Old French boillir
Origin: , from Latin bullīre
Origin: , from bulla, bubble.
Origin: Middle English bile
Origin: , from Old English bȳle.
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