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English definition of “blow sth up”

blow sth up

verb uk phrasal verb with blow   /bləʊ/ us    /bloʊ/ (blew, blown)

(FILL WITH AIR)

B1 to fill something with air: Would you help me blow up these balloons?Enlarging and inflatingBecoming bigger

(PHOTO)

to print a photograph or picture in a larger sizeEnlarging and inflatingBecoming bigger
(Definition of blow sth up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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