break out Definition in Cambridge British English Dictionary
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Definition of "break out" - British English Dictionary

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break out

phrasal verb with break uk   us   /breɪk/ verb (broke, broken)

(START)

B2 If something dangerous or unpleasant breaks out, it suddenly starts: War broke out in 1914. Fighting has broken out all over the city.break out in a rash, sweat, etc. to suddenly have red marks or sweat appear on your skin: She broke out in a rash after eating some strawberries. It didn't take much exercise to make him break out in (a) sweat. When I heard the noise I broke out in a cold sweat.
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(ESCAPE)

to escape from prison: They broke out of prison and fled the country.
(Definition of break out from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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