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English definition of “investment bank”

investment bank

noun [C]    
a bank that helps companies sell and buy shares , or helps them to buy other companies or merge (= join together) with each otherBanks and bank accounts investment banking     noun [U] the business of operating an investment bank Banking and personal finance investment banker     noun [C] someone who has an important job in an investment bank Banking and personal financeJobs, careers and professionsWorking
(Definition of investment bank noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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