[] () () a bank that provides finance for companies by buying their shares and selling them to the public. It also advises on takeovers and mergers (= when one company buys or joins with another) and on ways of raising money.投资银行◆The sale was handled by investment bank Merrill Lynch.销售是由投资银行美林操作的。➡merchant bank ▸inˈvestment ˌbanker