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English definition of “blow”

blow

verb [T]
 
 
/bləʊ/ (blew, blown)
to spend a lot of money on something that is not important or effective: Central Bank blew $900m of foreign-exchange reserves in the first two weeks of October alone.
blow the whistle (on sb/sth) to tell someone in authority about something harmful or illegal that someone is doing: If two of the firm's employees hadn't blown the whistle, the scandal would never have become known.
blow the lid on/off sth to tell people the real and unpleasant facts about something that were previously not known: The report blew the lid on the culture of secrecy surrounding the company's new range of fizzy-drink products.
blow a hole in sth to cause serious harm or damage to something: Defeat would blow a hole in the club's finances.
(Definition of blow verb from the Cambridge Business English Dictionary © Cambridge University Press)
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