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Definition of boil noun from the Oxford Advanced Learner's Dictionary

boil

noun
 
/bɔɪl/
 
/bɔɪl/
Idioms
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  1. [singular] a period of boiling; the point at which liquid boils
    • (British English) Bring the soup to the boil, then allow it to simmer for five minutes.
    • (North American English) Bring the soup to a boil.
    • The sauce should thicken as it comes to the boil.
    Extra Examples
    • Just before the milk comes to the boil, turn down the heat.
    • When it comes to a boil, reduce the heat.
    Oxford Collocations Dictionaryadjective
    • rolling
    verb + boil
    • bring something to
    • come to
    • go off
    See full entry
  2. [countable] a painful swelling (= an area that is larger and rounder than normal) under the skin which is full of a thick yellow liquid (called pus)
    • The doctor lanced the boil.
    • The boil on his back was painful.
    Oxford Collocations Dictionaryverb + boil
    • lance
    See full entry
  3. Word Originnoun sense 1 Middle English: from Old French boillir, from Latin bullire ‘to bubble’, from bulla ‘bubble’. noun sense 2 Old English bȳle, bȳl, of West Germanic origin; related to Dutch buil and German Beule.
Idioms
off the boil
  1. (British English) less good than before
    • The second series of the show really went off the boil.
    • He played brilliantly for the first set but then went rather off the boil.
on the boil
  1. very active
    • We have several projects all on the boil at once.
See boil in the Oxford Advanced American Dictionary
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