From Longman Dictionary of Contemporary Englishinvestment bankinˈvestment ˌbank noun [countable] a bank that buys and sells securities, stocks, or bonds —investment banker noun [countable] —investment banking noun [uncountable]From Longman Business Dictionaryinvestment bankinˈvestment bankBANKING a bank that buys stocks and shares and then sells them to members of the public. Investment banks also offer advice on things such as MERGERs and TAKEOVERsThe company announced it had hired an investment bank to explore options, including the possible merger with another entity. → bank
